PING www.xiaoyuming.com (104.21.21.169) 56(84) bytes of data.
64 bytes from 104.21.21.169 (104.21.21.169): icmp_seq=1 ttl=60 time=6.10 ms
64 bytes from 104.21.21.169 (104.21.21.169): icmp_seq=2 ttl=60 time=3.96 ms
64 bytes from 104.21.21.169 (104.21.21.169): icmp_seq=3 ttl=60 time=4.11 ms

--- www.xiaoyuming.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 3.966/4.727/6.102/0.976 ms