CHIN's

Nhan has an extreme, red birthmark that covers half his face; Debbie worries that her shoulder lump will prematurely age her; Justin is a dude rockin' a man bun, but he's having no fun due to the bumps poking through his scalp.

Monica becomes jealous of Phoebe and Gary. Rachel has an awkward encounter when she interviews for a new job. Joey tries to meet a girl living in Ross's building, but has trouble with finding her apartment.

After reconnecting on Facebook, Phil invites his old high school girlfriend to drop by the house, but this friendly visit quickly turns into trouble. Meanwhile Jay accidentally kills Manny's beloved pet turtle, then goes to extremes to cover his tracks, and an overworked Mitchell finally stands up to his boss.

Yingluo gets help from Fu Heng to secretly investigate and find the truth about her sister killer, While the Empresses is away, Yugui suddenly goes into labor and shocks everyone in the Changchun Palace. Consort Gao demands immediate action on a gravely important matter.

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is in charge of the kids. Also, Sheldon finds a book on experimenting on kids, and the guys plus Amy make a day of it.