PING yibo.iyiyun.com (115.159.16.169) 56(84) bytes of data.
64 bytes from 115.159.16.169 (115.159.16.169): icmp_seq=1 ttl=51 time=267 ms
64 bytes from 115.159.16.169 (115.159.16.169): icmp_seq=2 ttl=51 time=266 ms
64 bytes from 115.159.16.169 (115.159.16.169): icmp_seq=3 ttl=51 time=266 ms

--- yibo.iyiyun.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 266.133/266.711/267.643/0.893 ms