In the auricular point group , vaccaria seeds were pasted at gan ( CO@ ) , shen ( CO@ ) , pi ( CO@ ) , wei ( CO@ ) , yan ( LO@ ) , pingjianqian ( TG@i ) , pingjianhou ( ATli ) and zhen ( AT@ ) ; one ear was chosen every time and the other ear the second time with pressing of patient 's own for @ min every day .