Kunlun Nu
It is a very famous Chuanqi in the Tang Dynasty. Below is a full English translation of the story.
During the reign of Emperor Dezong in the Tang Dynasty, there was a man named Cui Sheng(崔生). His father was a prominent official who had a close relationship with high-ranking ministers of the time. Cui Sheng himself served as a guard in the palace. One of these high-ranking ministers fell ill, and Cui Sheng’s father instructed him to visit.