PING www.xfwjcs.cn (104.21.24.169) 56(84) bytes of data.
64 bytes from 104.21.24.169 (104.21.24.169): icmp_seq=1 ttl=60 time=6.89 ms
64 bytes from 104.21.24.169 (104.21.24.169): icmp_seq=2 ttl=60 time=4.52 ms
64 bytes from 104.21.24.169 (104.21.24.169): icmp_seq=3 ttl=60 time=4.42 ms

--- www.xfwjcs.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 4.427/5.282/6.895/1.143 ms