1. Phaseolus vulgaris is mainland China, mostly produced in western Sichuan and Tibet.

2. It is an erect evergreen shrub in Leguminosae, with short plants, also known as Marco, and its scientific name is Ma Doby.

3. Its young branches are yellow-green, yellow-brown when growing up, its bark is gray-black, its leaves are odd pinnate compound leaves, and it is also rich in protein, vitamins and dietary fiber.