1. https://asm.ca.com/zh_cn/ping.php inquiry github.global.ssl.fastly.net and github.com of china areas avr rtt smallest IP URL
2. Cut the root user, modify the / etc / hosts, add the following two lines
140.82.113.4 github.com
151.101.1.194 github.global.ssl.fastly.net
3. Restart network services: sudo /etc/init.d/networking restart
Test found, increased from 10 + KB 40 + KB, but still away from the Mana