Challenge: Defensive Tips When Facing the Red Chariot and Red Cannon: The Black General's Strategy in the 'River Fort' Formation - Can you solve it?

When the Red Chariot is on file 9 and the Red Cannon is on file 4, both advancing, the Black General on file 6 must use the 'Block First, Wait for Opportunity' tactic to counter. The Black Chariot on file 7 will be a crucial blocking piece to prevent the red chariot from piercing through.