The Sky Eye Yunyan FAST. Yunyan Tianyan is a Chinese trademark applied for registration by Hongyun Honghe Tobacco (Group) Co., Ltd. The trademark has gone through three generations. First, it was called Tianyan, then it was changed to Tianyan Yunyan, and then it applied for registration of "Tianyan Yunyan FAST". Hongyun Honghe Tobacco (Group) Co., Ltd. was established in 2008 and is located in Kunming City, Yunnan Province. It is an enterprise mainly engaged in the tobacco products industry.