As Kevin and Yang are bickering about which of them is the bigger nuisance to the other, Kevin realizes Panther is about to overhear them talking about their mission. So Kevin slaps Yang.
Panther: Hey! Fu-Sheng! What's wrong?
Kevin/Fu-Sheng: She gave me some of her female backtalk, so I—
(Yang slaps him)
Yang/Hana: Think you're superior, huh? Mao Tse-Tung said women are the true power of society!
Kevin (dazed): Mao Tse-Tung really said that?!
- And then, after Panther has gone:
Kevin: Hana, you hit your brother so hard. What if I was your husband?
Yang (coyly): Wait and find out.