Cactus, planted in the areas between west India and Mexico, was introduced to Taiwan in 1645, and broadly scatters in PengHu due to its suitability to sand shores.    The popular specie in PengHu shore is aciculate cactus with beautiful yellow flowers in summer and dark red bacca fruits.  The fruit is eatable and full of Vitamin C, tasting sour and sweet, so called as PengHu Red Apple.  TongLiang villagers have been devoted to developing cactus ice in recent years, to make it popular in Cross-sea Bridge Scenery Zone.  However, limited by production, the special food can only be sold by small vendors.