Convert from chin [China] to flask

Unit Definition (chin [China])
The chin [China] is one of several spellings in English for the jin, a traditional Chinese weight unit.

Unit Definition (flask)
The flask is a commercial unit of weight formerly used to measure liquid mercury (or quicksilver, as it was called). The flask was equal to 76.5 pounds avoirdupois, which is equivalent to almost exactly 34.7 kilograms.