Medicinal part: the seed medicinal materials properties: flat long oval or elliptic, about 1 cm long, about 6 mm wide. C. skins, sometimes have crack, obtuse at one end, and the other end point, tips have two small bumps, one of a small person for kind of umbilical; Another big bumps, have a clear bead holes. Edge smooth (unilateral winter melon seeds). Stripped of the kind of skin, visible ivory ZhongRen, there is oily. Gas micro smell and taste sweet. Key cultivation: origin: our country in all