PING underground-www.mac.net.cn (123.56.134.134) 56(84) bytes of data.
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=1 ttl=46 time=354 ms
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=2 ttl=46 time=352 ms
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=3 ttl=46 time=352 ms

--- underground-www.mac.net.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 352.981/353.409/354.264/0.914 ms