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

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