The Chinese Lantern (Physalis alkekengi L.var.franchetti(Mast.)Hort.) is a perennial plant that grows in Korea, China and Japan. This 40 to 90cm-tall plan has oval-shaped, irregularly serrated leaves. The light-yellow flowers are in bloom, the calyx grows to a length of 4 to 5cm and assumes an egg shape surrounding the berry. Upon ripening, this calyx turns red and the berry is spherical shape with a diameter of about 1.5cm. When the berry finally ripens and turns red, children take out all of the contents inside including the seeds through a hole at the top and use it as a whistle. Futhermore, the roots and berries themselves are known to have medical value.