PING www.beidu.org (104.21.92.29) 56(84) bytes of data.
64 bytes from 104.21.92.29 (104.21.92.29): icmp_seq=1 ttl=60 time=7.04 ms
64 bytes from 104.21.92.29 (104.21.92.29): icmp_seq=2 ttl=60 time=3.94 ms
64 bytes from 104.21.92.29 (104.21.92.29): icmp_seq=3 ttl=60 time=3.91 ms

--- www.beidu.org ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 3.918/4.970/7.046/1.469 ms