PING gzddb.icoc.cn (156.253.154.100) 56(84) bytes of data.
64 bytes from 156.253.154.100 (156.253.154.100): icmp_seq=1 ttl=59 time=185 ms
64 bytes from 156.253.154.100 (156.253.154.100): icmp_seq=2 ttl=59 time=184 ms
64 bytes from 156.253.154.100 (156.253.154.100): icmp_seq=3 ttl=59 time=185 ms

--- gzddb.icoc.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 184.977/185.063/185.134/0.064 ms