Convert from chin [China] to as, ass [Northern Europe]

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

Unit Definition (as, ass [Northern Europe])
The as, ass [Northern Europe] is a traditional unit of mass for gold and silver, used in most of northern Europe but not in England. The unit varied in size from about 48 to 58 milligrams (0.75 to 0.90 English grain).