PING guao.hk (104.247.81.99) 56(84) bytes of data.
64 bytes from 104.247.81.99: icmp_seq=1 ttl=60 time=506 ms
64 bytes from 104.247.81.99: icmp_seq=2 ttl=60 time=384 ms

--- guao.hk ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2323ms
rtt min/avg/max/mdev = 384.217/445.576/506.935/61.359 ms