Challenge: Xiangqi Pro Tips: The 'Red Cannon Empty' Strategy in the 'Black Chariot Thrust' Formation - Can you solve it?

When the Black Chariot is exposed on the 5th rank, threatening a direct thrust toward the Red General, the Red Cannon on the 4th rank must use the 'Empty' tactic to counter. This is one of the most classic formations in Xiangqi, similar to Lã Tòng's 'White Horse Avoids Storm' strategy.