Taiji Ruler Exercises 太極尺 video Added: Jan 2015 | Last update: Jun 2019 Taiji Ruler (Taiji Chih 太極尺). Ruler exercises as taught by grandmaster Feng Zhiqiang. Ruler is a 10.5 inch long light (yin) piece of wood. Concentration on the middle of the ruler and your qi development. Also see: http://www.weiqi.nl/ Tags: feng zhiqiang taiji chih 太極尺