Chinese designer Li Xiao-Ming created a series of building bricks made out of waste paper pulp. The basic properties are load-bearing, easy bricklaying, waterproof, environmental protection, available indoor and outdoor. A paper brick for indoors and outdoors, that is environmental friendly, waterproof and load-bearing. The waste pulp with light weight can be re-constructed into a high density material, which turns to be an interesting building material. The size of the brick is 42 x 21 x 7 centimeters, it is casted and its basic properties are density on surface, medium weight, high compressive strength (10-30MPa), medium strength of extension (1-3MPa), and medium breaking strength (2-4MPa).