Challenge: Xiangqi: The Hidden Secret in the First Move - The Red's Patient Strategy - Can you solve it?

When the Red Rook advances to 7/9, the position unfolds like an ancient puzzle. The Black Chariot waits at 6/7, while the Red General at 5/3 must carefully consider each move. This is where the secret of the 'double horse exchange' tactic is hidden within this chess formation.