PING yjs-any.lanfw.com.cname.yunjiasu-cdn.net (121.5.28.146) 56(84) bytes of data.
64 bytes from 121.5.28.146 (121.5.28.146): icmp_seq=1 ttl=49 time=313 ms
64 bytes from 121.5.28.146 (121.5.28.146): icmp_seq=3 ttl=49 time=314 ms

--- yjs-any.lanfw.com.cname.yunjiasu-cdn.net ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2419ms
rtt min/avg/max/mdev = 313.817/313.980/314.144/0.583 ms