The Ferghana also agreed to send two Heavenly horses each year to the Emperor, and lucerne seed was brought back to China providing superior pasture for raising fine horses in China, to provide cavalry which could cope with the Xiongnu who threatened China.
The Ferghana also agreed to dispatch two Heavenly horses annually to the Emperor, and lucerne seed was transported back to China, furnishing superior pasture for breeding exceptional horses in China, thereby providing cavalry capable of confronting the Xiongnu who posed a threat to China.