30 six axis industrial welding robots are arranged in sequence, posing the ultimate challenge to millimeter level precision control; 91 four axis unmanned aerial vehicles set sail successively, showcasing the aerial version of "speed and passion" with fancy twists and turns at speeds exceeding 60 kilometers per hour; 94 3D Building information modeling were loaded with building life cycle data, and the mouse and keyboard built a "ladder" across the virtual and real world....