GitHub Pages failed to bind domain name.
When not bound, access through https//2youngg.github.io/ is normal.
After binding the domain name, visiting https//2youngg.github.io/ can jump to http://tuzhengyang.cn/，但是网页无法显示。（我有等待半小时再开网站依然不行。）
The following are the steps I took to bind the domain name.

1. Add CNAME file
   

2. Go to the domain name service provider to add a CNAME record. Add two records, the host records of @ and www, the record type is CNAME, and the record value is 2Youngg.github.io
   

Attachment: Warehouse address: https://github.com/2Youngg/2Y...