Topic on discussion of vital-qi corresponding to heaven in the plain questions (Third article part IV) [1]

Physical overstrain can make the yang qi overwhelming outside, and exhaust the yin essence inside. If this happens frequently till the summer comes, the fired-coma is caused. The eyes become blind and cannot see. The ears become deaf and cannot listen. The fired-coma seems like a collapsing dam, overflowing deluge, and gurgling rapids that cannot be stopped.

Key Words: discussion of vital-qi corresponding to heaven, in the plain questions