When the Red Cannon aggressively lurks at 2-10, like a tiger ready to pounce on the fortress, how can Black defend with the lone General exposed at 4-8 and the Advisor guarding the file at 5-9? We will explore how to neutralize the 'empty cannon' threat using the 'foot' tactic (Chariot + General), transforming a dangerous position into a stunning counterattack. The article analyzes each move by Red, from 'advancing the horse' to 'moving the chariot,' teaching you how to stand firm like Mount Tai under pressure and then strike suddenly like thunder to overthrow the fortress. Don't miss historical lessons (like the Battle of Chi Lang) and defensive-counterattack strategies from legendary players like Ngoc Truyen or Nguyen Huu Thang!