Treatise on Tea by Emperor Huizong says that it’s picking and production is extremely exquisite. Monkey Tea inherits the technology of royal tribute tea of Song Dynasty, treating charcoal baking as the soul of Da Hong Pao. It requires pine of last year, burning into charcoal ash for baking. After charcoal baking and fermenting for four times, lasting several months, there is only half kilogram tea from more than five kilograms leaves.