C162 He Took Advantage of the Enemy's Weakness.

Qin Muchen carefully held the small fan and controlled the temperature of the medicinal herbs.

If the fire was too small, the green leaf would not be able to be boiled into medicinal dregs. If the fire was too big, the soup would be cooked dry and burn. The fire had to be just right, which was also known as the gentle fire.

Of course