Clearing away heat and toxic materials. Wang Lao Yu Ji's heat-clearing solid beverage has the function of clearing away heat and toxic materials. Wang Lao Ji is a cold drink, which can clear away heat and detoxify, quench thirst and produce fluid, and relieve symptoms such as sore throat, fever and dry mouth. It can reduce exogenous wind heat and prevent excessive internal heat. Wang Laoji is the brand of Wang Laoji herbal tea, which was founded by Wang Zebang in Daoguang period of Qing Dynasty, and is recognized as the ancestor of herbal tea.