PING www.xa3jdt.cn (38.12.188.68) 56(84) bytes of data.
64 bytes from 38.12.188.68 (38.12.188.68): icmp_seq=1 ttl=121 time=143 ms
64 bytes from 38.12.188.68 (38.12.188.68): icmp_seq=2 ttl=121 time=142 ms
64 bytes from 38.12.188.68 (38.12.188.68): icmp_seq=3 ttl=121 time=142 ms

--- www.xa3jdt.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 142.193/142.709/143.580/0.757 ms