洪武时期，由于明太祖在海外交通政策上推行勘合制度，曾促使海外穆斯林商人借助官方使节的身份开展对华贸易活动；
During the reign of Hongwu , the emperor performed the policy of " Kan he ", which encouraged the coming of the overseas Muslim merchants as government ambassadors ;
勘合