PING liucaixia.dz.vancelle.net (104.21.67.90) 56(84) bytes of data.
64 bytes from 104.21.67.90 (104.21.67.90): icmp_seq=1 ttl=59 time=5.39 ms
64 bytes from 104.21.67.90 (104.21.67.90): icmp_seq=2 ttl=59 time=5.13 ms
64 bytes from 104.21.67.90 (104.21.67.90): icmp_seq=3 ttl=59 time=5.04 ms

--- liucaixia.dz.vancelle.net ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2006ms
rtt min/avg/max/mdev = 5.040/5.189/5.393/0.170 ms