A “Record” of this good was written by the creator of a “dragon tribute” type of it, the famous calligrapher Cai Xiang (“tsai sh’YAHNG”). A network of trade routes known as the “Southern Silk Road” was named for horses and this good. (10[9])Emperor Huizong (10[2]-5[1])(“hway-dzong”) of (10[1])Song (10[1])wrote (-5[1])an influential “Grand Treatise” on this good, (-5[1])in which he laid out (-5[1])criteria (-5[1])for “competitions” focused on this good. (-5[1])The Rinzai monk (10[1])Eisai (10[2])(“AY-sigh”) is said to (10[1])have introduced this good to Japan from China, (10[4]-5[2])whose ritualized preparation (10[3])of it (10[5])is known (10[2])as (10[4])gongfu. (10[5])Lu Tingcan (10[1])wrote a “sequel” (10[1])to a (10[1])“Classic” (10[1])about this good by Lu Yu, which details its mythical discovery by Shennong (10[2])after looking (10[1])into (-5[1])his pot (10[1])of water. For 10 points, in China and Japan, what drink is presented in (10[1])elaborate namesake ceremonies? (10[2])■END■ (10[6]0[1])