Challenge: Xiangqi Counterattack: "How Red's Unique Horse-Step Trap Defeats Black's Solo Rook?" - Can you solve it?

A seemingly simple position hides a brilliant counterattack by Red: "Pawn river crossing combined with Horse and Cannon attack, forcing Black's General into a trap. Discover how to exploit the subtle trap to turn defeat into victory in just 3 moves. Lessons for those who want to master basic counterattack techniques in Xiangqi."