Charlie Chan at the Opera (1936)

Factual error: Charlie Chan claims that mixing hydrochloric acid with ferrocyanide of potassium is mixing two acids. Ferrocyanide of potassium is not an acid. (00:27:00)

Noman

Charlie Chan: Very old Chinese wise man once say, "Madness twin bvrother of genius because each live in world created by own ego. One sometimes mistaken for the other."

Charlie Chan: Honorable father once say, "Politeness golden key that open many doors."

Charlie Chan: Man who ride on merry-go-round often enough finally catch brass ring.