Continuity mistake: At the beginning of the episode when Mal, Jayne and Zoë are ransacking the destroyed ship for supplies, after Mal says "Vault's sealed" there is a shot of Mal as he inspects the door hatch before asking Jayne for the explosive gel gun. The ring around the door hatch's handle from the explosive gel gun is already visible in this shot.
Continuity mistake: In the close-up shot of the explosive in the sticky substance being applied to the outside of the cargo hold, the pink wire sticks out at the bottom, and in a loop in the middle. In the next shot, from slightly further back, the wire doesn't stick out anywhere, and the shape of the explosive ring has changed and become more oval. (00:05:30)
Chosen answer: One of the premises of the show is that the two major Earth societies that survived, and ultimately merged, were the Chinese and Americans. As a result the common language includes much Chinese. Clothing, signage, and building designs also have a heavy Chinese influence.