Challenge: The Hidden Mastery of Endgame Xiangqi: Double Rook vs. Cannon in a Heartbreaking One-Move Tragedy - Can you solve it?

Entering the game, it seems balanced, but beneath the surface lies deadly traps. This formation is renowned as the pinnacle of endgame tactics, requiring players to stay alert at every move. A single mistake can turn a fragile advantage into a decisive blow. Can you unravel the mystery behind this tragic one-move tragedy?