In a certain town, there was a master of art who specialized in studying one thing, called "Glycolic Acid Tac Dong", and his technique was "Glycolic Acid Tac Dng".

At the beginning, the master picked all kinds of plants and trees in the mountains and forests, and returned to study them carefully. Take all kinds of things, and refine them together with secret methods. In the pill furnace, the fire is nourished by warmth, and it is in moderation, and it is unremitting for a long time.

The essence of its technique is precision. Observe the slight changes in the heat, and observe the gradual changes in the state of things. Like the spring breeze turning into rain, moist but silent, making all things blend, so as to become the wonder of "Glycolic Acid Tac Dong".

When the neighbors see it, they are all amazed by its skills. Or ask the reason, and the master replies with a smile: "This is the principle of nature, the nature of things, add manpower, and you will get the best." The monarchs all praise its ability and pass on its skills near and far.