Kanshin planed the unexpected idea to overcome the army of Chinese state of So (Chu).
His troop pretended to attack the
fortress of So and then run away from the fortress.
Then, So’s army pursued Kanshin’s
troop and resulting in no soldier in the fortress. According to Kanshin’s order in advance, the 2,000 soldiers carrying red flags army took advantage of the situation to hang their flags on the
fortress.
When seeing such a sight, So’s army
believed to lose their fortress.