payload:
    - ntp.aliyun.com
    - ntp1.aliyun.com
    - ntp2.aliyun.com
    - ntp3.aliyun.com
    - ntp4.aliyun.com
    - ntp5.aliyun.com
    - ntp6.aliyun.com
    - ntp7.aliyun.com
    - time.amazonaws.cn
    - time.izatcloud.net
    - time.xtracloud.net
    - ntp.tencent.com
    - ntp1.tencent.com
    - ntp2.tencent.com
    - ntp3.tencent.com
    - ntp4.tencent.com
    - ntp5.tencent.com
    - +.cn.pool.ntp.org
    - +.ntp.neu.edu.cn
    - +.ntp.ntsc.ac.cn
    - +.ntp.org.cn