{
  # Use an NTP server located in the mainland of China to synchronize the system time
  networking.timeServers = [
    "ntp.aliyun.com" # Aliyun NTP Server
    "ntp.tencent.com" # Tencent NTP Server
  ];

  # dynamically update /etc/hosts for testing
  # Note that changes made in this way will be discarded when switching configurations.
  environment.etc.hosts.mode = "0644";
}