Stem Points Tian Gan Stems ( ) Parenthesis means active by being of the same clan(+ ) Parenthesis with a plus sign means should be treated also[ ] means active by partner day" " means added by the author of Optimum Time for Acupuncture 9 am - 11 am 11 am - 1 pm 1 pm - 3 pm 3 pm - 5 pm 5 pm - 7 pm 7 pm - 9 pm