DUYUN, China, March 22, 2024 /PRNewswire/ -- Duyun Maojian tea leaves mainly grow in Duyun City, Bouyei-Miao Autonomous Prefecture of Qiannan, southwest China'sGuizhou Province. In history, they were used as a tribute to the imperial court and given the name "fish hook tea" since dried tea leaves resembled a fish hook.