Chencha. In the misty rain rivers and lakes, women hate picking old tea to drink in Guiyun Island. Old tea is considered to be the best choice in the game, with special effects. The best water temperature of old tea is 80 degrees, which shortens the breakthrough time of martial arts after drinking. After drinking old tea, players can shorten the breakthrough time of martial arts within 4 to 5 minutes. Yu Yan Jianghu is a high-freedom martial arts RPG independent online game developed by Hangzhou Blue Whale Network Technology Co., Ltd. and distributed and operated by Hangzhou Simi Technology Co., Ltd.