When the Red Cannon is on File 5, Rank 3, it launches a 'Chu' (empty) attack on the Black Chariot on File 5, Rank 9, exposing the Black side's formation. However, with the Black Advisor on File 4, Rank 10 and the Black General on File 5, Rank 10, the Black side still has a chance to counterattack using the 'Horse Trap' strategy on File 5.