C471 This is a manual labor

After the green dagger sucked on it, the ball of black light disappeared and Liu Rufeng and the rest slowly walked over. Opening up the brick, they took out a rectangular black jade box.

Although it was called a jade box, it was actually made of a special kind of stone. However, it was very heavy, and according to Liu Rufeng's judgement, it was at least sixty to seventy kilograms