Using the traditional Chinese process of making tea bricks, the herbal waste produced during the use of herbal detoxification is processed. Through drying, pressing and air-drying, it is transformed into a "medicine brick". The surface can be seen to have the mechanism of different herbs, and the overall colour is dark brown-black and yellow-brown, and the fragrance of the herbs can be smelt close by, providing a soothing feeling of the material in the space.

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In actual detoxification activities, different ratios of herbs are often used to target the needs of different detoxification individuals. The colour and smell of the dregs can vary from one formula to another, and the 'medicine brick' is another way of recording the activities of the babelian in this Detox Retreat.