Widely recognized as a generic reference to Byzantium, possibly referring to Constantinople. Hirth (1885; 289) however, reconstructs the name as "But-lim" or "But-lam", and identifies it with Syria. The MSL contains only two references to this polity, both in the 1370s. For Byzantium during this period, see Nicol (1993). For information on further Chinese sources relating to this polity, see Chen, Xie and Lu (1986; 484).