We did this to block attacks. Click the ‘Connect to Game’ button to join the game and close the window.

This implementation assumes "china5.zip" is a dataset or resource file stored on your server. 1. Backend Implementation (Node.js/Express)

: If this "china5" file contains postal data, note that China uses a 6-digit numerical system . Ensure your zip contents align with these official postal requirements . China Postal Code Requirements | UPS Supply Chain Solutions

: For production, consider using cloud storage like Amazon S3 or Google Cloud Storage to host large zip files.