Challenge: Xiangqi 'Red Dog's Eye' - The Trap Behind the Black Arm - Can you solve it?

Look deeper into this position: "The Red side hides a 'dog's eye' on File 7, while the Black side thinks it has locked its ranks like 'Quat Zhong's Secret Fortress'. But who will be the first to realize that the Red side's 'empty cannon' is waiting for the perfect moment to explode? This is not just a battle, but a lesson in 'reading the position' like an ancient general: when to strike and when to retreat? Let's analyze each move in this position - before being caught off guard."