Howard, I'm going
to need another Mandarin lesson.
The Big Bang Theory Season 1, Episode 17
(SPEAKING IN MANDARIN)
The Big Bang Theory Season 1, Episode 17
(SPEAKING IN MANDARIN)
The Big Bang Theory Season 1, Episode 17
(SINGING IN MANDARIN)
The Big Bang Theory Season 10, Episode 20
(SPEAKING IN MANDARIN)
The Big Bang Theory Season 1, Episode 17