Not difficult. The promotion of Shanghai Weiqi from level 5 to level 4 is a local regulation or its own regulation of Weiqi Dojo. Generally, it can be popularized if the winning rate reaches 50%, as long as the technology is good, it is not difficult. Weiqi originated in ancient China. It is a strategic two-person chess game, which uses a chessboard and black and white pieces to play the game. Weiqi integrates science, art and competition.