The question under discussion here is both perplexing and easy, a paradox arising from the scarcity of precisely datable Sung bronzes. Because of the scarcity of such bronzes, art historians have not succeeded in forming a definite view about their quality, casting, and designs; however, it may be possible for specialists in other fields to say something about them. Unfortunately, records, too, are scanty. Under such circumstances, we may be justified in resorting to exogenous, namely economic, factors in the hope of finding an acceptable provisional conclusion.