BUILDING BRICK AND WALL BUILT THEREWITH

A building brick and a wall built therewith, the building brick comprising a rectangular-shaped brick comprising a protrusion (1) and a recess (2) respectively provided on two opposite sides. Several through-holes (3) pass through the two opposite sides of the brick and/or several open slots (4) are provided on the brick. The open slots (4) comprise a first open slot (41) and a second open slot (42). The wall comprises several layers. An offset between bricks in adjacent layers causes the first open slots (41) in the same layer to cooperate and enclose a first open-slot accommodating chamber (7) consistent with the shape of the through-hole (3); the second open slots (42) of the brick in the same layer are superimposed to form a communicating horizontal accommodating chamber, and a center line of the through-hole (3) in adjacent layers of the bricks is superimposed with a center line of the first open slot accommodating chamber (7) to form a communicating vertical accommodating chamber. The building brick imp