A 45 year-old man has chronic indigestion with a sensation of fullness of the epigastrium, belching, and nausea. The pulse is full and tight, especially in the middle position. The tongue has a thick white coating. Which vessel would you treat?
1) ren mai (directing vessel)
2) yin wei mai (yin linking vessel)
3) chong mai (penetrating vessel)
4) yin qiao mai (yin stepping vessel)
