{ "version": 1, "rules": [ { "domain": [ "time.izatcloud.net", "time.xtracloud.net" ], "domain_suffix": [ "cn.pool.ntp.org", "ntp.neu.edu.cn", "ntp.ntsc.ac.cn", "ntp.org.cn" ], "domain_regex": [ "^ntp([1-7])?\\.aliyun\\.com$", "^ntp([1-5])?\\.tencent\\.com$" ] } ] }