PING qcxn.cn (172.67.169.239) 56(84) bytes of data.
64 bytes from 172.67.169.239 (172.67.169.239): icmp_seq=1 ttl=60 time=6.97 ms
64 bytes from 172.67.169.239 (172.67.169.239): icmp_seq=2 ttl=60 time=4.68 ms
64 bytes from 172.67.169.239 (172.67.169.239): icmp_seq=3 ttl=60 time=4.62 ms

--- qcxn.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.621/5.428/6.974/1.093 ms