diff --git a/content/Building Systems with the ChatGPT API/10.Evaluation-part2.ipynb b/content/Building Systems with the ChatGPT API/10.Evaluation-part2.ipynb
index 1848b58..ca790e5 100644
--- a/content/Building Systems with the ChatGPT API/10.Evaluation-part2.ipynb	
+++ b/content/Building Systems with the ChatGPT API/10.Evaluation-part2.ipynb	
@@ -38,7 +38,7 @@
     "import sys\n",
     "sys.path.append('../..')\n",
     "import utils_en\n",
-    "import utils_ch\n",
+    "import utils_zh\n",
     "from dotenv import load_dotenv, find_dotenv\n",
     "_ = load_dotenv(find_dotenv()) # read local .env file\n",
     "\n",
@@ -124,13 +124,13 @@
     "另外，你们这有什么 TVs ？\"\"\"\n",
     "\n",
     "# 从问题中抽取商品名\n",
-    "products_by_category = utils_ch.get_products_from_query(customer_msg)\n",
+    "products_by_category = utils_zh.get_products_from_query(customer_msg)\n",
     "# 将商品名转化为列表\n",
-    "category_and_product_list = utils_ch.read_string_to_list(products_by_category)\n",
+    "category_and_product_list = utils_zh.read_string_to_list(products_by_category)\n",
     "# 查找商品对应的信息\n",
-    "product_info = utils_ch.get_mentioned_product_info(category_and_product_list)\n",
+    "product_info = utils_zh.get_mentioned_product_info(category_and_product_list)\n",
     "# 由信息生成回答\n",
-    "assistant_answer = utils_ch.answer_user_msg(user_msg=customer_msg, product_info=product_info)"
+    "assistant_answer = utils_zh.answer_user_msg(user_msg=customer_msg, product_info=product_info)"
    ]
   },
   {
diff --git a/content/Building Systems with the ChatGPT API/8.Evaluation.ipynb b/content/Building Systems with the ChatGPT API/8.Evaluation.ipynb
index 50afa5b..43bec3f 100644
--- a/content/Building Systems with the ChatGPT API/8.Evaluation.ipynb	
+++ b/content/Building Systems with the ChatGPT API/8.Evaluation.ipynb	
@@ -81,7 +81,7 @@
     "# 使用英文 Prompt 的工具包\n",
     "import utils_en\n",
     "# 使用中文 Prompt 的工具包\n",
-    "import utils_ch\n",
+    "import utils_zh\n",
     "\n",
     "import panel as pn  # 用于图形化界面\n",
     "pn.extension()\n",
@@ -286,16 +286,16 @@
     "    if debug: print(\"第一步：输入通过 Moderation 检查\")\n",
     "    \n",
     "    # 第二步：抽取出商品和对应的目录，类似于之前课程中的方法，做了一个封装\n",
-    "    category_and_product_response = utils_ch.find_category_and_product_only(user_input, utils_ch.get_products_and_category())\n",
+    "    category_and_product_response = utils_zh.find_category_and_product_only(user_input, utils_zh.get_products_and_category())\n",
     "    #print(category_and_product_response)\n",
     "    # 将抽取出来的字符串转化为列表\n",
-    "    category_and_product_list = utils_ch.read_string_to_list(category_and_product_response)\n",
+    "    category_and_product_list = utils_zh.read_string_to_list(category_and_product_response)\n",
     "    #print(category_and_product_list)\n",
     "\n",
     "    if debug: print(\"第二步：抽取出商品列表\")\n",
     "\n",
     "    # 第三步：查找商品对应信息\n",
-    "    product_information = utils_ch.generate_output_string(category_and_product_list)\n",
+    "    product_information = utils_zh.generate_output_string(category_and_product_list)\n",
     "    if debug: print(\"第三步：查找抽取出的商品信息\")\n",
     "\n",
     "    # 第四步：根据信息生成回答\n",
diff --git a/content/Building Systems with the ChatGPT API/9.Evaluation-part1.ipynb b/content/Building Systems with the ChatGPT API/9.Evaluation-part1.ipynb
index 05ba75d..8fdc63a 100644
--- a/content/Building Systems with the ChatGPT API/9.Evaluation-part1.ipynb	
+++ b/content/Building Systems with the ChatGPT API/9.Evaluation-part1.ipynb	
@@ -82,7 +82,7 @@
     "import time\n",
     "sys.path.append('../..')\n",
     "import utils_en\n",
-    "import utils_ch\n",
+    "import utils_zh\n",
     "\n",
     "openai.api_key  = \"your_key\""
    ]