1. Excellent growing environment: Dongting Mountain, Xihu District, Hangzhou, at an altitude of 150-800 meters, Canglangwu, Longjing Village and other mountainous areas. The climate and soil are very suitable for tea tree growth.

2. Late mining time: before Ming Dynasty refers to a period of time around Grain Rain, that is, from the beginning of April to 10 every year. At this time, the tea seedlings are in the early growth period of new buds, and the tender leaves and buds contain a lot of nutrients such as amino acids.

3. Elaborate production: Longjing tea before the Ming Dynasty was made by first fixing, then rolling and baking at high temperature. Traditional manual techniques, such as medium-temperature baking, frying and screening, are used to make tea soft in texture, rich in aroma, clear in soup color and fresh in taste.

4. Unique flavor: Before the Ming Dynasty, Longjing had the characteristics of Gao Shuang fragrance, fresh and mellow taste, and long sweetness. The soup was green and clear, and the bottom of the cup was bright green, which had a certain health-keeping effect and was deeply loved by tea lovers.