Tang Huiyao, "Vol. 72" quote: "康國馬。康居國也。是大宛馬種。形容極大。武德中。康國獻四千匹。今時官馬。猶是其種。……康曷利馬。印宅。" rough translation: "Horses of the Kang nation, which is the Kangju nation. They are a stock of Dayuan horses. In the middle of the Wude era [622 - 626 CE], the Kang nation tributed 4,000 horses. Nowadays, the officials' horses are [probably] of that stock. [...] Kangheli's horses; tamga [resembles] [character] 宅"