diff --git a/.gitignore b/.gitignore
index 83c4605a..3056a0ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,8 @@ liteyuki/resources/templates/latest-debug.html
 .github
 pyproject.toml
 
+test.py
+
 # nuitka
 main.build/
 main.dist/
diff --git a/liteyuki/plugins/liteyuki_markdowntest.py b/liteyuki/plugins/liteyuki_markdowntest.py
index c648590e..d914754b 100644
--- a/liteyuki/plugins/liteyuki_markdowntest.py
+++ b/liteyuki/plugins/liteyuki_markdowntest.py
@@ -1,13 +1,16 @@
-from nonebot import on_command
+from nonebot import on_command, require
+from nonebot.adapters.onebot.v11 import MessageSegment
 from nonebot.params import CommandArg
 from nonebot.permission import SUPERUSER
 from nonebot.plugin import PluginMetadata
 
 from liteyuki.utils.base.ly_typing import T_Bot, T_MessageEvent, v11
 from liteyuki.utils.message.message import MarkdownMessage as md, broadcast_to_superusers
+from liteyuki.utils.message.html_tool import *
 
 md_test = on_command("mdts", permission=SUPERUSER)
 btn_test = on_command("btnts", permission=SUPERUSER)
+latex_test = on_command("latex", permission=SUPERUSER)
 
 placeholder = {
         "[": "[",
@@ -28,6 +31,7 @@ async def _(bot: T_Bot, event: T_MessageEvent, arg: v11.Message = CommandArg()):
         session_id=event.user_id if event.message_type == "private" else event.group_id
     )
 
+
 @btn_test.handle()
 async def _(bot: T_Bot, event: T_MessageEvent, arg: v11.Message = CommandArg()):
     await md.send_btn(
@@ -37,6 +41,14 @@ async def _(bot: T_Bot, event: T_MessageEvent, arg: v11.Message = CommandArg()):
         session_id=event.user_id if event.message_type == "private" else event.group_id
     )
 
+
+@latex_test.handle()
+async def _(bot: T_Bot, event: T_MessageEvent, arg: v11.Message = CommandArg()):
+    latex_text = f"$${str(arg)}$$"
+    img = await md_to_pic(latex_text)
+    await bot.send(event=event, message=MessageSegment.image(img))
+
+
 __author__ = "snowykami"
 __plugin_meta__ = PluginMetadata(
     name="轻雪Markdown测试",
diff --git a/liteyuki/plugins/liteyuki_pacman/npm.py b/liteyuki/plugins/liteyuki_pacman/npm.py
index 3c4a92bd..5db9bcb7 100644
--- a/liteyuki/plugins/liteyuki_pacman/npm.py
+++ b/liteyuki/plugins/liteyuki_pacman/npm.py
@@ -11,11 +11,14 @@ from nonebot.internal.adapter import Event
 from nonebot.internal.matcher import Matcher
 from nonebot.message import run_preprocessor
 from nonebot.permission import SUPERUSER
-from nonebot.plugin import Plugin
+from nonebot.plugin import Plugin, PluginMetadata
+from nonebot.utils import run_sync
+
 from liteyuki.utils.base.data_manager import InstalledPlugin
 from liteyuki.utils.base.language import get_user_lang
 from liteyuki.utils.base.ly_typing import T_Bot
 from liteyuki.utils.message.message import MarkdownMessage as md
+from liteyuki.utils.message.markdown import MarkdownComponent as mdc, compile_md, escape_md
 from liteyuki.utils.base.permission import GROUP_ADMIN, GROUP_OWNER
 from liteyuki.utils.message.tools import clamp
 from .common import *
@@ -229,7 +232,7 @@ async def _(result: Arparma, event: T_MessageEvent, bot: T_Bot, npm: Matcher):
         plugin_name: str = result.subcommands["install"].args.get("plugin_name")
         store_plugin = await get_store_plugin(plugin_name)
         await npm.send(ulang.get("npm.installing", NAME=plugin_name))
-        r, log = npm_install(plugin_name)
+        r, log = await npm_install(plugin_name)
         log = log.replace("\\", "/")
 
         if not store_plugin:
@@ -398,6 +401,56 @@ async def _(bot: T_Bot, event: T_MessageEvent, gm: Matcher, result: Arparma):
         )
 
 
+@on_alconna(
+    aliases={"帮助"},
+    command=Alconna(
+        "help",
+        Args["plugin_name", str, None],
+    )
+).handle()
+async def _(result: Arparma, matcher: Matcher, event: T_MessageEvent, bot: T_Bot):
+    ulang = get_user_lang(str(event.user_id))
+    plugin_name = result.main_args.get("plugin_name")
+    if plugin_name:
+        loaded_plugin = nonebot.get_plugin(plugin_name)
+
+        if loaded_plugin:
+            if loaded_plugin.metadata is None:
+                loaded_plugin.metadata = PluginMetadata(name=plugin_name, description="", usage="")
+            # 从商店获取详细信息
+            store_plugin = await get_store_plugin(plugin_name)
+            if loaded_plugin.metadata.extra.get("liteyuki"):
+                store_plugin = StorePlugin(
+                    name=loaded_plugin.metadata.name,
+                    desc=loaded_plugin.metadata.description,
+                    author="SnowyKami",
+                    module_name=plugin_name,
+                    homepage="https://github.com/snowykami/LiteyukiBot"
+                )
+            elif store_plugin is None:
+                store_plugin = StorePlugin(
+                    name=loaded_plugin.metadata.name,
+                    desc=loaded_plugin.metadata.description,
+                    author="",
+                    module_name=plugin_name,
+                    homepage=""
+                )
+            reply = [
+                    mdc.heading(escape_md(loaded_plugin.metadata.name)),
+                    mdc.quote(mdc.bold(ulang.get("npm.author")) + " " +
+                              mdc.link(store_plugin.author, f"https://github/{store_plugin.author}") if store_plugin.author else "Unknown"),
+                    mdc.quote(mdc.bold(ulang.get("npm.description")) + " " + mdc.paragraph(max(loaded_plugin.metadata.description, store_plugin.desc))),
+                    mdc.heading(ulang.get("npm.usage"), 2),
+                    mdc.paragraph(loaded_plugin.metadata.usage),
+            ]
+            await md.send_md(compile_md(reply), bot, event=event)
+        else:
+            await matcher.finish(ulang.get("npm.plugin_not_found", NAME=plugin_name))
+    else:
+        pass
+
+
+# 传入事件阻断hook
 @run_preprocessor
 async def pre_handle(event: Event, matcher: Matcher):
     plugin: Plugin = matcher.plugin
@@ -410,6 +463,7 @@ async def pre_handle(event: Event, matcher: Matcher):
             raise IgnoredException("Plugin disabled in session")
 
 
+# 群聊开关阻断hook
 @Bot.on_calling_api
 async def block_disable_session(bot: Bot, api: str, args: dict):
     if "group_id" in args and not args.get("liteyuki_pass", False):
@@ -442,7 +496,7 @@ async def npm_update() -> bool:
 
 async def npm_search(keywords: list[str]) -> list[StorePlugin]:
     """
-    搜索插件
+    在本地缓存商店数据中搜索插件
 
     Args:
         keywords (list[str]): 关键词列表
@@ -468,8 +522,10 @@ async def npm_search(keywords: list[str]) -> list[StorePlugin]:
     return results
 
 
+@run_sync
 def npm_install(plugin_package_name) -> tuple[bool, str]:
     """
+    异步安装插件，使用pip安装
     Args:
         plugin_package_name:
 
diff --git a/liteyuki/resources/lang/zh-CN.lang b/liteyuki/resources/lang/zh-CN.lang
index 74bb0b51..10a4df61 100644
--- a/liteyuki/resources/lang/zh-CN.lang
+++ b/liteyuki/resources/lang/zh-CN.lang
@@ -65,6 +65,7 @@ npm.loaded_plugins=已加载插件
 npm.total=总计 {TOTAL}
 npm.help=帮助
 npm.usage=用法
+npm.description=描述
 npm.disable=停用
 npm.disable_global=全局停用
 npm.enable=启用
diff --git a/liteyuki/utils/base/config.py b/liteyuki/utils/base/config.py
index 641164cf..bc83306f 100644
--- a/liteyuki/utils/base/config.py
+++ b/liteyuki/utils/base/config.py
@@ -36,7 +36,7 @@ def load_from_yaml(file: str) -> dict:
         return conf
 
 
-def get_config(key: str, bot: T_Bot = None, default=None):
+def get_config(key: str, *, bot: T_Bot = None, default=None):
     """获取配置项，优先级：bot > config > db > yaml"""
     if bot is None:
         bot_config = {}
@@ -59,6 +59,15 @@ def get_config(key: str, bot: T_Bot = None, default=None):
 
 
 def init_conf(conf: dict) -> dict:
+    """
+    初始化配置文件，确保配置文件中的必要字段存在，且不会冲突
+    Args:
+        conf:
+
+    Returns:
+
+    """
+    # 若command_start中无""，则添加必要命令头，开启alconna_use_command_start防止冲突
     if "" not in conf.get("command_start", []):
         conf["alconna_use_command_start"] = True
     return conf
diff --git a/liteyuki/utils/base/language.py b/liteyuki/utils/base/language.py
index 40bc83d7..aae24e29 100644
--- a/liteyuki/utils/base/language.py
+++ b/liteyuki/utils/base/language.py
@@ -9,7 +9,7 @@ from typing import Any
 
 import nonebot
 
-from .config import config
+from .config import config, get_config
 from .data_manager import User, user_db
 
 _language_data = {
@@ -18,6 +18,10 @@ _language_data = {
         }
 }
 
+_user_lang = {
+        "user_id": "zh-CN"
+}
+
 
 def load_from_lang(file_path: str, lang_code: str = None):
     """
@@ -101,8 +105,11 @@ def load_from_dict(data: dict, lang_code: str):
 
 
 class Language:
-    def __init__(self, lang_code: str = None, fallback_lang_code: str = "zh-CN"):
+    # 三重fallback
+    # 用户语言 > 默认语言/系统语言 > zh-CN
+    def __init__(self, lang_code: str = None, fallback_lang_code: str = None):
         self.lang_code = lang_code
+
         if self.lang_code is None:
             self.lang_code = get_default_lang_code()
 
@@ -112,7 +119,7 @@ class Language:
 
     def get(self, item: str, *args, **kwargs) -> str | Any:
         """
-        获取当前语言文本
+        获取当前语言文本，kwargs中的default参数为默认文本
         Args:
             item:   文本键
             *args:  格式化参数
@@ -123,44 +130,44 @@ class Language:
 
         """
         default = kwargs.pop("default", None)
+        fallback = (self.lang_code, self.fallback_lang_code, "zh-CN")
 
-        try:
-            if self.lang_code in _language_data and item in _language_data[self.lang_code]:
-                return _language_data[self.lang_code][item].format(*args, **kwargs)
-            nonebot.logger.debug(f"Language text not found: {self.lang_code}.{item}")
-            if self.fallback_lang_code in _language_data and item in _language_data[self.fallback_lang_code]:
-                return _language_data[self.fallback_lang_code][item].format(*args, **kwargs)
-            nonebot.logger.debug(f"Language text not found in fallback language: {self.fallback_lang_code}.{item}")
-            return default or item
-        except Exception as e:
-            nonebot.logger.error(f"Failed to get language text or format: {e}")
-            return default or item
+        for lang_code in fallback:
+            if lang_code in _language_data and item in _language_data[lang_code]:
+                trans: str = _language_data[lang_code][item]
+                try:
+                    return trans.format(*args, **kwargs)
+                except Exception as e:
+                    nonebot.logger.warning(f"Failed to format language data: {e}")
+                    return trans
+        return default or item
 
-    def get_many(self, *args) -> dict[str, str]:
-        """
-        获取多个文本
-        Args:
-            *args: 文本键
 
-        Returns:
-            dict: 文本字典
-        """
-        d = {}
-        for item in args:
-            d[item] = self.get(item)
-        return d
+def change_user_lang(user_id: str, lang_code: str):
+    """
+    修改用户的语言
+    """
+    user = user_db.first(User(), "user_id = ?", user_id, default=User(user_id=user_id))
+    user.profile["lang"] = lang_code
+    user_db.update(user, "user_id = ?", user_id)
 
 
 def get_user_lang(user_id: str) -> Language:
     """
-    获取用户的语言代码
+    获取用户的语言实例，优先从内存中获取
     """
-    user = user_db.first(User(), "user_id = ?", user_id, default=User(
-        user_id=user_id,
-        username="Unknown"
-    ))
-
-    return Language(user.profile.get("lang", get_default_lang_code()))
+    if user_id in _user_lang:
+        return Language(_user_lang[user_id])
+    else:
+        user = user_db.first(
+            User(), "user_id = ?", user_id, default=User(
+                user_id=user_id,
+                username="Unknown"
+            )
+        )
+        lang_code = user.profile.get("lang", get_default_lang_code())
+        _user_lang[user_id] = lang_code
+        return Language(lang_code)
 
 
 def get_system_lang_code() -> str:
@@ -172,11 +179,11 @@ def get_system_lang_code() -> str:
 
 def get_default_lang_code() -> str:
     """
-    获取默认语言代码
+    获取默认语言代码，若没有设置则使用系统语言
     Returns:
 
     """
-    return config.get("default_language", get_system_lang_code())
+    return get_config("default_language", default=get_system_lang_code())
 
 
 def get_all_lang() -> dict[str, str]:
diff --git a/liteyuki/utils/message/html_tool.py b/liteyuki/utils/message/html_tool.py
index 4d7a5294..8f258e23 100644
--- a/liteyuki/utils/message/html_tool.py
+++ b/liteyuki/utils/message/html_tool.py
@@ -110,3 +110,4 @@ async def url2image(
             type=type,
             quality=quality
         )
+
diff --git a/liteyuki/utils/message/markdown.py b/liteyuki/utils/message/markdown.py
index 2e08f3b9..b27c7af9 100644
--- a/liteyuki/utils/message/markdown.py
+++ b/liteyuki/utils/message/markdown.py
@@ -9,7 +9,7 @@ from ..base.config import get_config
 from ..base.ly_typing import T_Bot
 
 
-def markdown_escape(text: str) -> str:
+def escape_md(text: str) -> str:
     """
     转义Markdown特殊字符
     Args:
@@ -27,57 +27,62 @@ def markdown_escape(text: str) -> str:
 
 def escape_decorator(func):
     def wrapper(text: str):
-        return func(markdown_escape(text))
+        return func(escape_md(text))
 
     return wrapper
 
 
+def compile_md(comps: list[str]) -> str:
+    """
+    编译Markdown文本
+    Args:
+        comps: list[str]: 组件列表
+
+    Returns:
+        str: 编译后文本
+    """
+    print("".join(comps))
+    return "".join(comps)
+
+
 class MarkdownComponent:
     @staticmethod
-    @escape_decorator
     def heading(text: str, level: int = 1) -> str:
         """标题"""
         assert 1 <= level <= 6, "标题级别应在 1-6 之间"
-        return f"{'#' * level} {text}"
+        return f"{'#' * level} {text}\n"
 
     @staticmethod
-    @escape_decorator
     def bold(text: str) -> str:
         """粗体"""
         return f"**{text}**"
 
     @staticmethod
-    @escape_decorator
     def italic(text: str) -> str:
         """斜体"""
         return f"*{text}*"
 
     @staticmethod
-    @escape_decorator
     def strike(text: str) -> str:
         """删除线"""
         return f"~~{text}~~"
 
     @staticmethod
-    @escape_decorator
     def code(text: str) -> str:
         """行内代码"""
         return f"`{text}`"
 
     @staticmethod
-    @escape_decorator
     def code_block(text: str, language: str = "") -> str:
         """代码块"""
-        return f"```{language}\n{text}\n```"
+        return f"```{language}\n{text}\n```\n"
 
     @staticmethod
-    @escape_decorator
     def quote(text: str) -> str:
         """引用"""
-        return f"> {text}"
+        return f"> {text}\n"
 
     @staticmethod
-    @escape_decorator
     def link(text: str, url: str, symbol: bool = True) -> str:
         """
         链接
@@ -87,10 +92,9 @@ class MarkdownComponent:
             url: 链接地址
             symbol: 是否显示链接图标, mqqapi请使用False
         """
-        return f"[{'🔗' if symbol else ''}{text}]({quote(url)})"
+        return f"[{'🔗' if symbol else ''}{text}]({url})"
 
     @staticmethod
-    @escape_decorator
     def image(url: str, *, size: tuple[int, int]) -> str:
         """
         图片，本地图片不建议直接使用
@@ -104,7 +108,6 @@ class MarkdownComponent:
         return f"![image #{size[0]}px #{size[1]}px]({url})"
 
     @staticmethod
-    @escape_decorator
     async def auto_image(image: str | bytes, bot: T_Bot) -> str:
         """
         自动获取图片大小
@@ -143,7 +146,6 @@ class MarkdownComponent:
         return MarkdownComponent.image(url, size=size)
 
     @staticmethod
-    @escape_decorator
     def table(data: list[list[any]]) -> str:
         """
         表格
@@ -160,6 +162,17 @@ class MarkdownComponent:
             table += "|".join(map(str, row)) + "\n"
         return table
 
+    @staticmethod
+    def paragraph(text: str) -> str:
+        """
+        段落
+        Args:
+            text: 段落内容
+        Returns:
+            markdown格式的段落
+        """
+        return f"{text}\n"
+
 
 class Mqqapi:
     @staticmethod