diff --git a/content/Building Systems with the ChatGPT API/categories.json b/content/Building Systems with the ChatGPT API/categories.json
new file mode 100644
index 0000000..ae73479
--- /dev/null
+++ b/content/Building Systems with the ChatGPT API/categories.json	
@@ -0,0 +1 @@
+{"Billing": ["Unsubscribe or upgrade", "Add a payment method", "Explanation for charge", "Dispute a charge"], "Technical Support": ["General troubleshooting", "Device compatibility", "Software updates"], "Account Management": ["Password reset", "Update personal information", "Close account", "Account security"], "General Inquiry": ["Product information", "Pricing", "Feedback", "Speak to a human"]}
\ No newline at end of file
diff --git a/content/Building Systems with the ChatGPT API/utils_zh.py b/content/Building Systems with the ChatGPT API/utils_zh.py
index 33be701..5cbbb39 100644
--- a/content/Building Systems with the ChatGPT API/utils_zh.py	
+++ b/content/Building Systems with the ChatGPT API/utils_zh.py	
@@ -113,21 +113,21 @@ def create_categories():
                 'Explanation for charge',
                 'Dispute a charge'],
       'Technical Support':[
-                'General troubleshooting'
+                'General troubleshooting',
                 'Device compatibility',
                 'Software updates'],
       'Account Management':[
-                'Password reset'
+                'Password reset',
                 'Update personal information',
                 'Close account',
                 'Account security'],
       'General Inquiry':[
-                'Product information'
+                'Product information',
                 'Pricing',
                 'Feedback',
                 'Speak to a human']
     }
-    
+
     with open(categories_file, 'w') as file:
         json.dump(categories_dict, file)