1, different colors: fresh Mesona blume is grayish green or light brown, wrinkled and curly, crisp and fragile; Mesona blume is dark brown or grayish brown after drying, with hoarfrost on the surface, fragile texture and luster.

2. Different medicinal effects: fresh Mesona chinensis is mostly used for food, and dried Mesona chinensis is mostly used for medicine. Fresh Mesona chinensis has the effects of relieving summer heat, clearing away heat, cooling blood and detoxicating, while dried Mesona chinensis has the effects of clearing away heat, quenching thirst and detoxicating, and can be used to treat heatstroke, thirst, hypertension and muscle and joint pain.