What's the difference between the patent WeChat official account and the authorization announcement number?

An application for a patent for invention will be made public twice during the authorization process, once after passing the preliminary examination (18 months) and once during the authorization.

When it was released, it was WeChat official account, and when it was authorized to be released, it was the announcement number. Both China patent documents start with CN, but the difference lies in the last code, WeChat official account A and announcement B.