Xuefu Zhuyu decoction has the functions of promoting blood circulation, removing blood stasis and relieving pain, and is used to treat chest obstruction and blood stasis syndrome. Shengmaiyin can replenish qi, promote fluid production, astringe yin and stop sweating, and is suitable for the treatment of warmth, summer heat, deficiency of qi and yin, and deficiency of both qi and yin. Xie Wei onion liquor decoction has the effects of activating yang, dispersing stagnation, widening chest and regulating qi, and is suitable for chest obstruction, wheezing, expectoration, chest pain and shortness of breath. Xie Wei Xiebai Banxia Decoction has the effects of activating yang, promoting qi circulation, resolving phlegm and relieving arthralgia, and is suitable for the syndrome of stagnation of phlegm and turbidity in chest obstruction. Suhexiang Pill can be used for inducing resuscitation with fragrance, and is suitable for cold-blocking syndrome. Test site: syndrome differentiation and treatment of chest obstruction.