PING ptgs.cn (156.250.158.131) 56(84) bytes of data.
64 bytes from 156.250.158.131 (156.250.158.131): icmp_seq=1 ttl=54 time=256 ms
64 bytes from 156.250.158.131 (156.250.158.131): icmp_seq=2 ttl=54 time=201 ms
64 bytes from 156.250.158.131 (156.250.158.131): icmp_seq=3 ttl=54 time=200 ms

--- ptgs.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 200.879/219.898/256.874/26.152 ms