Night Watcher of the Tang Dynasty

You can see the bright moonlight in front of the window, but you can't see anyone guarding the long border for you. You can hear the children's laughter, but you can't hear the firm "everything is okay" in the wind and snow. These human fireworks and magnificent mountains and rivers are never gifts from nature. It is the light that generation after generation of night watchmen use their youth, reunion, and even their lives to wrest back from the hands of darkness inch by inch. They hold up the clear sky for us, but their own world is often stormy. They can protect the sleep of an entire city, but they may not be able to pat their children on the back in nightmares. The so-called prosperous age is just countless glimmers of light that choose to burn themselves. When we bathe in the sunshine, please remember that behind every ray of light, there is a shadow that faces away from the light.