Challenge: Xiangqi 'Big Cannon vs. Rear Guard': Decoding the Attacking Strategy from Black's Defensive Formation - Can you solve it?

This formation contains a profound lesson on exploiting weaknesses in an opponent's seemingly solid defensive structure. From a balanced position, Red must find the sharp combination of Chariot - Cannon - Horse to breach the opponent's defenses. The Coach's in-depth analysis will reveal the golden opportunity being overlooked.