PING proxy.cn.qizhihaotian.com (106.63.29.3) 56(84) bytes of data.
64 bytes from 106.63.29.3 (106.63.29.3): icmp_seq=1 ttl=55 time=280 ms
64 bytes from 106.63.29.3 (106.63.29.3): icmp_seq=2 ttl=55 time=277 ms
64 bytes from 106.63.29.3 (106.63.29.3): icmp_seq=3 ttl=55 time=280 ms

--- proxy.cn.qizhihaotian.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 277.560/279.567/280.937/1.513 ms