Analyzing the 'Black Rook on File 7, Rank 2' and 'Red Rook on File 4, Rank 10' positions in Xiangqi, where the Red Cannon on File 9, Rank 9 hides a secret 'Checkmate Lock'. Discover how the Red Horse on File 2, Rank 9 creates the 'Blade Wind' to reverse this double rook formation!