The fresh leaves come from Ya'an famous mountain. The picking cycle is from mid April to early May every year. The green drying process is adopted. The green drying process is used for twice, three times rolling, shape control, twice drying and aroma raising. The shape is curly, fine and tight, slightly white hair, good evenness, high dryness, clear and green soup color, obvious millet fragrance, long-lasting high fragrance, strong impact resistance, one bud and two leaves at the bottom of the leaves, sharp seedling and slightly single leaf