Qiu Chuji (10 February 1148– 21 August 1227), courtesy name Tongmi (通密), also known by his Taoist name Master Changchun, was the disciple of Wang Chongyang and a renowned Taoist master. He is known for meeting Genghis Khan near the Hindu Kush. Qiu was one of the Seven True Daoists of the North. He was the founder of the Dragon Gate sect of Taoism attracting a following in the streams of traditions flowing from the sects of the disciples. History In 1219 Genghis Khan invited Changchun to visit him in a letter dated 15 May 1219 by present reckoning. Changchun left his home in Shandong in February 1220 and journeyed to Beijing. Learning that Genghis had gone West, he spent winter there. In February 1221, Changchun left, traversing modern-day eastern Mongolia to the camp of Genghis' youngest brother Otchigin near Lake Buyur in the upper Kerulen - today's Kherlen-Amur basin. From there he traveled southwestward up the Kerulen, crossing the Karakorum region in north-central Mongolia, and arrived at the Altai Mountains, probably passing near the present Uliastai. After traversing the Altai he visited Bishbalig, modern Ürümqi, and moved along the north side of the Tian Shan range to Lake Sutkol, today's Sairam, Almaliq (or Yining City), and the rich valley of the Ili. From there, Changchun passed to Balasagun and Shu River, and across that river to Talas and the Tashkent region, and then over the Syr Darya to Samarkand, where he halted for some months. Finally, through the Iron Gates of Termit, over the Amu Darya, and by way of Balkh and northern Afghanistan, Changchun reached Genghis' camp near the Hindu Kush. Changchun, had been invited to satisfy the interest of Genghis Khan in "the philosopher's stone" and the secret medicine of immortality. He explained the Taoist philosophy and the many ways to prolong life and was honest in saying there was no secret medicine of immortality. The two had 12 in-depth conversations. Genghis Khan honoured him with the title Spirit Immortal. Genghis also made Changchun in charge of all religious persons in the empire. Their conversations were recorded in the book Xuanfeng qinghui lu. The Yenisei area had a community of weavers of ethnic Han origin. Similarly, Samarkand and Outer Mongolia both had artisans of Han origin, as observed by Changchun. After the Mongol conquest of Central Asia, foreigners were chosen as administrators. Co-management with Han and Khitans