PING www.symbol.org.cn (119.28.66.139) 56(84) bytes of data.
64 bytes from 119.28.66.139 (119.28.66.139): icmp_seq=1 ttl=121 time=219 ms
64 bytes from 119.28.66.139 (119.28.66.139): icmp_seq=2 ttl=121 time=218 ms
64 bytes from 119.28.66.139 (119.28.66.139): icmp_seq=3 ttl=121 time=218 ms

--- www.symbol.org.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 218.680/218.859/219.162/0.215 ms