" That Man Is Where the Lights Are Waning " was a poem written by Du Fu, a poet of the Tang Dynasty. The poem consisted of four sentences, which mainly told the story of the poet looking for a confidant in Chang 'an. Below is the complete version of the poem: "But that person is in the dim light." Where the lights were waning, that person was there. A place with dim lights was a place with few people. That person was in the dim light, referring to the poet looking for a confidant in Chang 'an, only to find that the other party was no longer brightly lit. This poem expressed the poet's loneliness and helplessness in finding a confidant in Chang 'an, and also reflected the social class division and the complexity of interpersonal relationships in the Tang Dynasty.