diff --git a/crazy_functions/Langchain知识库.py b/crazy_functions/Langchain知识库.py
index 4fee382..3edb215 100644
--- a/crazy_functions/Langchain知识库.py
+++ b/crazy_functions/Langchain知识库.py
@@ -18,17 +18,19 @@ def 知识库问答(txt, llm_kwargs, plugin_kwargs, chatbot, history, system_pro
     chatbot.append(("这是什么功能？", "[Local Message] 从一批文件(txt, md, tex)中读取数据构建知识库, 然后进行问答。"))
     yield from update_ui(chatbot=chatbot, history=history) # 刷新界面
 
+    # resolve deps
     try:
-        import zh_langchain
+        from zh_langchain import construct_vector_store
         from langchain.embeddings.huggingface import HuggingFaceEmbeddings
         from .crazy_utils import knowledge_archive_interface
     except Exception as e:
         chatbot.append(
             ["依赖不足", 
-             "导入依赖失败。使用该模块需要额外依赖，安装方法```pip install --upgrade langchain zh_langchain```。"]
+             "导入依赖失败。正在尝试自动安装，请查看终端的输出或耐心等待..."]
         )
         yield from update_ui(chatbot=chatbot, history=history) # 刷新界面
-        return
+        from .crazy_utils import try_install_deps
+        try_install_deps(['zh_langchain==0.1.9'])
     
     # < --------------------读取参数--------------- >
     if ("advanced_arg" in plugin_kwargs) and (plugin_kwargs["advanced_arg"] == ""): plugin_kwargs.pop("advanced_arg")
@@ -52,7 +54,7 @@ def 知识库问答(txt, llm_kwargs, plugin_kwargs, chatbot, history, system_pro
     print('Checking Text2vec ...')
     from langchain.embeddings.huggingface import HuggingFaceEmbeddings
     with ProxyNetworkActivate():    # 临时地激活代理网络
-        HuggingFaceEmbeddings(model_name="GanymedeNil/text2vec-large-chinese", model_kwargs={'device': 'cpu'})
+        HuggingFaceEmbeddings(model_name="GanymedeNil/text2vec-large-chinese")
 
     # < -------------------构建知识库--------------- >
     chatbot.append(['<br/>'.join(file_manifest), "正在构建知识库..."])
@@ -86,6 +88,7 @@ def 读取知识库作答(txt, llm_kwargs, plugin_kwargs, chatbot, history, syst
         resp, prompt = kai.answer_with_archive_by_id(txt, kai_id)
 
     chatbot.append((txt, '[Local Message] ' + prompt))
+    yield from update_ui(chatbot=chatbot, history=history) # 刷新界面 # 由于请求gpt需要一段时间，我们先及时地做一次界面更新
     gpt_say = yield from request_gpt_model_in_new_thread_with_ui_alive(
         inputs=prompt, inputs_show_user=txt, 
         llm_kwargs=llm_kwargs, chatbot=chatbot, history=[], 
diff --git a/crazy_functions/crazy_utils.py b/crazy_functions/crazy_utils.py
index a447d22..96301ff 100644
--- a/crazy_functions/crazy_utils.py
+++ b/crazy_functions/crazy_utils.py
@@ -638,7 +638,7 @@ class knowledge_archive_interface():
             print('Checking Text2vec ...')
             from langchain.embeddings.huggingface import HuggingFaceEmbeddings
             with ProxyNetworkActivate():    # 临时地激活代理网络
-                self.text2vec_large_chinese = HuggingFaceEmbeddings(model_name="GanymedeNil/text2vec-large-chinese", model_kwargs={'device': 'cpu'})
+                self.text2vec_large_chinese = HuggingFaceEmbeddings(model_name="GanymedeNil/text2vec-large-chinese")
 
         return self.text2vec_large_chinese
 
@@ -694,3 +694,7 @@ class knowledge_archive_interface():
         self.threadLock.release()
         return resp, prompt
 
+def try_install_deps(deps):
+    for dep in deps:
+        import subprocess, sys
+        subprocess.check_call([sys.executable, '-m', 'pip', 'install', '--user', dep])
diff --git a/requirements.txt b/requirements.txt
index feeca7c..1d70323 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,4 @@
 ./docs/gradio-3.32.2-py3-none-any.whl
-zh_langchain==0.1.6
 tiktoken>=0.3.3
 requests[socks]
 transformers
diff --git a/toolbox.py b/toolbox.py
index 6903684..4e92b4f 100644
--- a/toolbox.py
+++ b/toolbox.py
@@ -783,8 +783,9 @@ class ProxyNetworkActivate():
         from toolbox import get_conf
         proxies, = get_conf('proxies')
         if 'no_proxy' in os.environ: os.environ.pop('no_proxy')
-        os.environ['HTTP_PROXY'] = proxies['http']
-        os.environ['HTTPS_PROXY'] = proxies['https']
+        if proxies is not None:
+            if 'http' in proxies: os.environ['HTTP_PROXY'] = proxies['http']
+            if 'https' in proxies: os.environ['HTTPS_PROXY'] = proxies['https']
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):