Advanced grade. Because high-grade refers to a product brand with high price and good quality, and Taihu Cuizhu is a brand selling tea, the price of a box of tea is about 500~900 yuan, which is about 200~300 yuan more expensive than ordinary tea, and Taihu Cuizhu tea has the functions of helping digestion, relieving fatigue, lowering blood pressure and so on, which conforms to the characteristics of high grade, so Taihu Cuizhu belongs to high grade.