PING 92lux.cn.cdn.cloudflare.net (104.21.64.21) 56(84) bytes of data.
64 bytes from 104.21.64.21 (104.21.64.21): icmp_seq=1 ttl=60 time=6.56 ms
64 bytes from 104.21.64.21 (104.21.64.21): icmp_seq=2 ttl=60 time=4.06 ms
64 bytes from 104.21.64.21 (104.21.64.21): icmp_seq=3 ttl=60 time=4.01 ms

--- 92lux.cn.cdn.cloudflare.net ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.012/4.879/6.567/1.196 ms