PING www.baishai.com (104.21.66.155) 56(84) bytes of data.
64 bytes from 104.21.66.155 (104.21.66.155): icmp_seq=1 ttl=60 time=4.51 ms
64 bytes from 104.21.66.155 (104.21.66.155): icmp_seq=2 ttl=60 time=4.07 ms
64 bytes from 104.21.66.155 (104.21.66.155): icmp_seq=3 ttl=60 time=4.11 ms

--- www.baishai.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.074/4.234/4.513/0.197 ms