During the eighteenth century, Russia constantly sought new sources of fur. They obtained large quantities from Siberia and the Kamchatka Peninsula to as far east as the Aleutian Islands and Alaska. The cold winter weather in North China insured a ready market for fur, and China became the most important destination for Russian fur export. Upon the establishment of a trading relationship between China and Russia in the region of Kiakhta during the Ch’ien-lung reign, the dispatched missions to Kiakhta to buy fur. Imperial purchases made up nearly three percent of the total volume traded. The Imperial Household Department only chose the most valuable fur for the imperial dress and sold the rest at a profit of about ten percent. During the Ch’ien-lung reign, most of the fur obtained from T’ang-nu-wu-lianghai (which was inferior to that of the northeast) was sold. The Imperial Household Department sold almost 600,000 silver taels worth of fur during this period, which stimulated the popularization of fur in the capital and contributed to the development of Chinese material cu1ture. Emperor Ch’ien-lung was very particular about what he wore, giving many opinions on the design, tailoring, production, and alteration of his clothing. Furs were also presented to ministers and guards as rewards. The Imperial Household Department employed tailors for over ten thousand man-days a year. The tailors not only made clothes for the Imperial family but also popularized the wearing of fur outside the court.