1, Zhou Yu used three strategies in Battle of Red Cliffs, namely double espionage, serial conspiracy and adventure conspiracy. Battle of Red Cliffs was one of the famous wars that took place during the Three Kingdoms period in China.

2. Countermeasures: Zhou Yu used Jiang Gan to kill Cai Mao and Zhang Yun.

3. Chain plan: Pang Tong presented a chain plan to let Cao Cao connect all the warships with chains.

4. Bitter plan: Huang Gai cheated Cao Cao with a bitter plan and attacked Chibi with fire.