Break the law. Powder brick refers to unqualified coal gangue sintered brick, which will burst and pulverize. If you touch it lightly with your hand, the brick powder will fall like biscuit crumbs, which will seriously affect the overall bearing capacity of the wall. The state has launched a special campaign to crack down on quality crimes such as "black cotton", "powdered bricks", "slimming steel bars" and "counterfeiting Chinese herbal medicines", so it is illegal to use powdered bricks. In addition, according to the "Guiding Opinions on the Construction of National Quality Credit System", a "blacklist" of quality dishonesty will be established and a number of enterprises with serious quality dishonesty will be announced.