Guan Gujun, a young Japanese man who has just moved into iPartment, discusses with his new friends the hardships of living in China and learning Chinese.

Hu Yifei thinks that Zi Qiao has been behaving a little bit differently lately and decides to look through his trash to see what he's been up to. What will she find?

As Zi Qiao explains his techniques to find a girlfriend, Hu Yifei, with the help of Zeng Xiaoxian, tries to figure out what he's been up to.

Guan Gujun comes home from his Chinese class and explains to Mei Jia the troubles he's having with his studies.

As Hu Yifei and Zeng Xiaoxian keep investigating Zi Qiao, they start doubting his mental health and believing that he might be depressed.

While Hu Yifei and Zeng Xiaoxian discuss the history of mental diseases in Zhan Bo's family, he comes in and a rather interesting conversation ensues.

Guan Gujun is approached by an innocent-looking child who asks him to make a donation for a good cause. But does this child really want this money for the cause?

Zhan Bo is progressively starting to doubt himself and beginning to think he might actually be the one who's mentally unstable.

What started as an innocent investigation has turned into a bigger problem, with Zhan Bo getting more and more serious about it.

Still concerned about Zi Qiao's sanity, Yi Fei and Zeng Xiaoxian decide to finally confront him.

Zi Qiao recites lyrics in an attempt to get sympathy- and a discount on rent!

Zi Qiao is taking full advantage of his condition as a "sick person."

Mei Jia is fed up with Zi Qiao's deceit and she makes her dissatisfaction known.

Yi Fei wants to take Zi Qiao to see a shrink, but Xiao Xian doesn't believe it's necessary.

Yi Fei and Xiao Xian propose that Zi Qiao see a psychologist for his "depression."

Zhan Bo's aunt comes for a visit.

Xiao Xian takes Zi Qiao to see Dr. Yang, who reminds him of his previous issues.

Xiao Xian asks Dr. Ou Yang to keep his secret.