PING underground-kbgkm.51km.cn (121.43.170.127) 56(84) bytes of data.
64 bytes from 121.43.170.127 (121.43.170.127): icmp_seq=1 ttl=50 time=180 ms
64 bytes from 121.43.170.127 (121.43.170.127): icmp_seq=2 ttl=50 time=180 ms
64 bytes from 121.43.170.127 (121.43.170.127): icmp_seq=3 ttl=50 time=180 ms

--- underground-kbgkm.51km.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 180.467/180.563/180.724/0.503 ms