in the muromachi period, tea tasting competitions were popular. people also gambled on these competitions. zen buddhist master, juko murata (1422–1502) stopped these competitions. he broke with the grand tradition, and developed a small ceremony performed around the tatami mat. the tea ceremony was perfected afterward in the azuchimomoyama era by jou takeno and sen no rikyu (1522–1591). they removed all extra movements and unnecessary decoration and objects from the tea room. the idea, based on zen, was to concentrate your attention on the wealth inside your mind.