PING www.yz-tc.com (121.40.112.102) 56(84) bytes of data.
64 bytes from 121.40.112.102 (121.40.112.102): icmp_seq=1 ttl=51 time=219 ms
64 bytes from 121.40.112.102 (121.40.112.102): icmp_seq=2 ttl=51 time=218 ms
64 bytes from 121.40.112.102 (121.40.112.102): icmp_seq=3 ttl=51 time=218 ms

--- www.yz-tc.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 218.549/218.964/219.737/0.667 ms