PING ziyuan.n.shifen.com (223.109.81.161) 56(84) bytes of data.
64 bytes from 223.109.81.161 (223.109.81.161): icmp_seq=1 ttl=50 time=255 ms
64 bytes from 223.109.81.161 (223.109.81.161): icmp_seq=2 ttl=50 time=253 ms
64 bytes from 223.109.81.161 (223.109.81.161): icmp_seq=3 ttl=50 time=253 ms

--- ziyuan.n.shifen.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 253.428/253.998/255.070/0.862 ms