PING dz-www.longtuedu.com.cn (69.87.207.186) 56(84) bytes of data.
64 bytes from 69.87.207.186 (69.87.207.186): icmp_seq=1 ttl=122 time=141 ms
64 bytes from 69.87.207.186 (69.87.207.186): icmp_seq=2 ttl=122 time=139 ms
64 bytes from 69.87.207.186 (69.87.207.186): icmp_seq=3 ttl=122 time=139 ms

--- dz-www.longtuedu.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 139.304/139.981/141.210/0.971 ms