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Is Zheng's heptachord reliable?

Zheng's heptachord is reliable. Dr. Liu Yaoqin was in Zheng 'an at the beginning of the opening of Chengdu Kuanzhai Lane Store, and was recognized for his superb medical skills, cordial attitude and remarkable curative effect. During this period, the course of "Classic Prescription Kit" was also held, which helped everyone understand the treatment principle of TCM and enhanced their confidence in TCM, including many TCM fans.