PING ziyuan.n.shifen.com (223.109.81.159) 56(84) bytes of data.
64 bytes from 223.109.81.159 (223.109.81.159): icmp_seq=1 ttl=50 time=247 ms
64 bytes from 223.109.81.159 (223.109.81.159): icmp_seq=2 ttl=50 time=246 ms
64 bytes from 223.109.81.159 (223.109.81.159): icmp_seq=3 ttl=50 time=246 ms

--- ziyuan.n.shifen.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 246.881/247.124/247.598/0.526 ms