PING www.heimaying.com.cn (104.21.67.57) 56(84) bytes of data.
64 bytes from 104.21.67.57 (104.21.67.57): icmp_seq=1 ttl=60 time=5.12 ms
64 bytes from 104.21.67.57 (104.21.67.57): icmp_seq=2 ttl=60 time=5.35 ms
64 bytes from 104.21.67.57 (104.21.67.57): icmp_seq=3 ttl=60 time=5.11 ms

--- www.heimaying.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 5.117/5.198/5.356/0.126 ms