① Appearance: The appearance and color of green leaves are important factors to judge the quality of tea, including tenderness, purity, uniformity and color of tea.

② Aroma: namely tea fragrance, with floral, fruity, chestnut and bean fragrance as the best.

③ Taste: The tea soup is mellow and fresh, indicating that the water extract content is high and the tea quality is good.

4 soup color: also known as "water color", such as the soup color of green tea is clear and bright.

⑤ Leaf bottom: Leaf bottom can reflect the texture and tenderness of tea. Bright color and consistent texture indicate that the tea-making process is good. The bud tips and tissues at the bottom of leaves are thin, soft and fine, which indicates that the tea leaves are tender.