Marriage Revelation

Xie Jun's work is not going well, and to celebrate his child's birthday, he decides to sell his blood for money. However, upon returning home, his wife, Tang Liwen, tells him that the child has already eaten cake and gone to sleep. While chatting with Tang Liwen, Xie Jun notices a red mark on her body. Tang Liwen explains it was caused by someone bumping into her on the subway, but this plants a seed of doubt in Xie Jun's mind. The next day, a coworker claims to have seen Tang Liwen with a strange man, leading Xie Jun to suspect that his wife is having an affair.