ChiDragon

What you are saying that is your chest is stronger than your abdomen! How did you come to that conclusion?

I don't know what are you really asking. If you practice Qigong, the chi(氣) goes into your lung, then, the heart pumps the blood into the lung to collect the oxygen. The first organ that uses the oxygen is the lung, then, the heart is the second organ to use it. Both organs uses the oxygen to convert energy for muscle contraction. However, in order to acquire the ultimate goal of Qigong is to sink chi into the lower dantian(LDT), 氣沉丹田. Under this condition, the more oxygen that the lung can give to the heart, the heart will be more healthier. Regardless of what Qigong style that you practice, your body will have the same effect. In your terms, chi will flow all over inside your body. Whatever you would like to define what chi is.

What was your point? What do you want to say? "Zazen gets up and walks around?" I don't get it. Do you actually know what Zazen is all about? I understand that Zazen is a sitting position in three lotus styles. Zazen is not a thing that walks around. However, after the practice and getting up from the lotus position, it is hard to walk for awhile until the legs are returned to the normal walking condition.

Wu Wei is nothing that cannot be done.