Which dynasty in history did the Three Monsters of Chang 'an explore?

The play tells the story of a bizarre serial murder case in Chang 'an at the end of the Tang Dynasty, in which three "strange detectives" eradicated evil. ... the murderer was not found, but he saw the little monkey, and soon Lao Cao's body was hung on the beam.

The Three Monsters of Chang 'an is a costume detective drama jointly produced by Happiness Blue Ocean Film and Television Culture Group Co., Ltd. and Jiangsu Tiandi Zongheng Film and Television Culture Investment Co., Ltd., directed by Zhuang Yuxin and starring Chen Musheng,,, and.

The play tells the story of a bizarre serial murder case in Chang 'an at the end of the Tang Dynasty, in which three "strange detectives" eradicated evil.

The play premiered on March 19, 2065438 in Shandong Film and Television Channel.