Bukhara and Samarqand were visited by Changchun. At the same time the Mongols imported Central Asian Muslims to serve as administrators in China, the Mongols also sent Han Chinese and Khitans from China to serve as administrators over the Muslim population in Bukhara and Samarqand in Central Asia, using foreigners to curtail the power of the local peoples of both lands. The surname of Li was held by one of Yelu Ahai's staff of Han Chinese. There were various Chinese craftsmen. Tangut, Khitan and Han Chinese took control over gardens and fields from the Muslims. Han Chinese were moved to Central Asian areas like Besh Baliq, Almaliq, and Samarqand by the Mongols where they worked as artisans and farmers. Alans were recruited into the Mongol forces with one unit called "Right Alan Guard" which was combined with "recently surrendered" soldiers, Mongols, and Chinese soldiers stationed in the area of the former Kingdom of Qocho and in Besh Balikh the Mongols established a Chinese military colony led by Chinese general Qi Kongzhi (Ch'i Kung-chih).