PING proxy.cn.qizhihaotian.com (106.63.29.13) 56(84) bytes of data.
64 bytes from 106.63.29.13 (106.63.29.13): icmp_seq=1 ttl=55 time=281 ms
64 bytes from 106.63.29.13 (106.63.29.13): icmp_seq=2 ttl=55 time=279 ms
64 bytes from 106.63.29.13 (106.63.29.13): icmp_seq=3 ttl=55 time=280 ms

--- proxy.cn.qizhihaotian.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 279.964/280.432/281.259/0.586 ms