PING s1.poco.cn (120.25.219.41) 56(84) bytes of data.
64 bytes from 120.25.219.41 (120.25.219.41): icmp_seq=1 ttl=51 time=199 ms
64 bytes from 120.25.219.41 (120.25.219.41): icmp_seq=2 ttl=51 time=197 ms
64 bytes from 120.25.219.41 (120.25.219.41): icmp_seq=3 ttl=51 time=197 ms

--- s1.poco.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 197.264/197.872/199.040/0.972 ms