5i50.com.cn.		359 IN SOA jm1.alidns.com. hostmaster.hichina.com. (
				2020032511 ; serial
				3600       ; refresh (1 hour)
				1200       ; retry (20 minutes)
				86400      ; expire (1 day)
				360        ; minimum (6 minutes)
				)

5i50.com.cn.		599 IN A 172.121.40.42

Name servers:
5i50.com.cn.		21599 IN NS jm2.alidns.com.
5i50.com.cn.		21599 IN NS jm1.alidns.com.