1. find path C:\Windows\System32\drivers\etc\host
2. open DNS detection and DNS query-Webmaster(DNS查询) tool (http://tool.chinaz.com/dns)
3. enter the domain name in the test input field (example: github.com)
4. input the IP with the lowest TTL value in the detection list into hosts, and write the domain name accordingly

remark：The function of host file

1. speed up domain name resolution(加快域名解析)
2. convenient for LAN users(方便局域网用户)
3. screened(屏蔽) website
4. connecting the system smoothly
5. force a domain name to correspond to an IP address