In many table tennis games, the auxiliary line is an indispensable auxiliary tool for many novices, but no matter how good you are at playing, it is only limited to the game. Once the auxiliary line is missing in actual combat, you will Became a super rookie. Several college students from the University of Algarve in Portugal moved the auxiliary lines into actual combat, relying on projectors, cameras and related system programs to clearly project the auxiliary lines onto the table, making it even possible for rookies to become a master.
