swjtugz.com.		30 IN SOA ns1.bdydns.cn. sa.dudns.com. (
				2018080119 ; serial
				3600       ; refresh (1 hour)
				300        ; retry (5 minutes)
				2592000    ; expire (4 weeks 2 days)
				120        ; minimum (2 minutes)
				)

Name servers:
swjtugz.com.		30 IN NS ns1.bdydns.cn.
swjtugz.com.		30 IN NS ns2.bdydns.cn.