At septuple seven , with deficiency in the ren channel and decline in the tai chong channel , deca runs out and menstruation stops , so the body declines , unable to breed .

七七任脉虚，太冲脉衰少，天癸竭，地道不通，故形坏而无子也。

At septuple eight , with the liver energy declined , tendon unactivated and the deca exausted , little essence , the kidney declines and both shape and body exaust .

七八肝气衰，筋不能动，天癸竭，精少，肾脏衰，形体皆极。