Challenge: The 'Red Cannon Empty' Formation - A Battle Like the Battle of Red Cliffs, Black Horse Must Collapse! - Can you solve it?

Red Chariot on File 2 and Red Cannon on File 3 combine forces to create an 'empty cannon' formation threatening the Black General. Black Horse on File 4 can only defend and cannot counterattack. This is a classic formation like the Battle of Red Cliffs, where enemy forces concentrate to eliminate the opposing general.