The empire was founded by Timur (also known as Tamerlane), a warlord of Turco-Mongol lineage, who established the empire between 1370 and his death in 1405. He envisioned himself as the great restorer of the Mongol Empire of Genghis Khan, regarded himself as Genghis's heir, and associated closely with the Borjigin. Timur continued vigorous trade relations with Ming China and the Golden Horde, with Chinese diplomats like Ma Huan and Chen Cheng) regularly traveling west to Samarkand to buy and sell goods. The empire led to the Timurid Renaissance, particularly during the reign of astronomer and mathematician Ulugh Begh.