PING www.uczc.cn (47.106.153.117) 56(84) bytes of data.
64 bytes from 47.106.153.117 (47.106.153.117): icmp_seq=1 ttl=114 time=247 ms
64 bytes from 47.106.153.117 (47.106.153.117): icmp_seq=2 ttl=114 time=246 ms
64 bytes from 47.106.153.117 (47.106.153.117): icmp_seq=3 ttl=114 time=247 ms

--- www.uczc.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 246.983/247.158/247.425/0.605 ms