PING www.51xianhua.com.cn (104.21.13.177) 56(84) bytes of data.
64 bytes from 104.21.13.177 (104.21.13.177): icmp_seq=1 ttl=60 time=4.92 ms
64 bytes from 104.21.13.177 (104.21.13.177): icmp_seq=2 ttl=60 time=4.32 ms
64 bytes from 104.21.13.177 (104.21.13.177): icmp_seq=3 ttl=60 time=4.39 ms

--- www.51xianhua.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.321/4.546/4.927/0.270 ms