Which episode is Liu Lixuan's lonely female companion man mistakenly entering Sifeng's room?

In the fifth episode, a woman disguised as a man enters the men's bathhouse to help Sifeng get back the hairpin, and then returns it to Sifeng. Unexpectedly, Sifeng's classmates ran to Sifeng's room, and Sifeng hid her in the bed. As a result, she fell asleep.

Synopsis: Xuan Ji, a girl born with six senses, and Sifeng, a disciple of Lize Palace, joined hands to create a colorful legend of Xianxia under the double pressure of love and past life conspiracy.