PeterCBWang

If the 29th  days will be 50% of the bottle, 30th day will be full (50% x 2 = 100%).
( C. w' @& Q4 F! |+ M6 N- ^Answer is 29 days!
+ h. P) d/ X8 yTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。plz answer