暗渡陈仓
Stratagems of Defending · 敌战计Pretend to attack in one direction while secretly advancing in another. Use visible preparations to mask your true intentions.
After Liu Bang was granted the remote kingdom of Han, he burned the Plank Road to show he had no intention of returning east. Meanwhile, his general Han Xin secretly built a new road through Chencang and launched a surprise attack, reclaiming the Three Qins.
Google publicly focused on search and advertising while secretly building Android into the world's dominant mobile OS. By the time competitors realized Google was entering mobile, Android had already achieved critical mass through carrier partnerships.
The Allies publicly planned to capture a French port quickly. Secretly, they built massive prefabricated Mulberry harbours in England. When the ports proved too well-defended, the hidden harbours were towed across the Channel — the secret plan saved the invasion.