蒋干盗书This is an episode from the Three Kingdoms. Cao cao sent a letter to Zhou Yu to summon him to surrender. Zhou Yu tore Cao's letter to pieces. Zhou Yu's classmate， Jiang Gan， was working for Cao Cao as an adviser， Jiang offered to travel to Wu to persuade Zhou Yu to surrender. One day while Zhou Yu was discussing with his subordinates how to defeat Cao Cao， he was told that Jiang Gan had come to see him. Zhou immediately figured out that Jiang must have come to persuade him to surrender. Zhou Yu devised a clever plan to thwart his efforts and enlisted the help of his subordinate to carry it out. Then he went to meet Jiang Gan all smiles. Zhou Yu took Jiang Gan's hands and marshaled him into his tent and treated him to a banquet. When all his generals and subordinates came for dinner， Zhou Yu told those around the table： “This is an old friend or mine. Though he came from the Cao Cao camp， he did not come to persuade me to surrender. Please do not suspect him.” After the banquet， Zhou Yu pretended that he had too much and invited Jiang Gan to his bedroom for a rest. Zhou Yu soon pretended to have fallen asleep. Jiang Gan took this chance to thumb through Zhou Yu's documents. He was shocked to find a letter from Cai Mao and Zhang Yun， two generals of the Cao camp， who had written Zhou Yu to surrender. Jiang hid letter of surrender in his pocket and returned to the bed， pretending that he was sill asleep.
After midnight， someone sneaked into Zhou Yu's tent and woke him up， telling him “A messenger came from the Cao camp to say that Cai Mao and Zhang Yun were not yet a position to carry out their plan.” After he heard the news， Zhou Yu went back to sleep. Jiang Gan got up again silently and snuck out of Zhou Yu's camp. He crossed the river immediately and handed the letter of surrender to Cao Cao. Cao was enraged and he had Cai Mao and Zhang Yun executed.
When the news spread to Wu， Zhou Yu burst into laughter and said， “Cai Mao and Zhang Yun were the two generals I feared most. Now I fear no one.” Before long， Cao cao realized that he was cheated by Zhou Yu's stratagem of sowing distrust in Cao's camp.
吕布戏貂禅 Following the interlocking stratagems they had laid， Wang Yun betrothed his step daughter Diao Chan to Lü Bu， then， to sow discord between the two， presented the girl to Dong Zhou as a concubine. Lü Bu was furious， and each time he met Diao Chan， the latter feigned a sad tearful look. One day， while Dong Chan was in court， Lü Bu rushed back to Dong Zhuo's residence to see the girl. In the Fengyi Pavilion the girl said to him with a desperate look， “I have prolonged my life in disgrace simply so I could have a final meeting with you and let you know my feelings. Ishould have waited upon you but unfortunately Dong Zhuo took me by force. We can only meet in the next life…” So saying she meant to throw herself into the lotus pool. Lü Bu hurriedly held her back and swore， “How can I be a man if I fail to marry you?”
Suddenly aware of Lü Bu's absence， Dong Zhuo， suspicious， rushed back to his residence to see Diao Chan was nowhere. The service maids told him the girl and Lü Bu were in the back garden. Dong Zhuo rushed there and at the sight of the two， roared with anger. Lü Bu fled. When Dong Zhuo got back to his bedroom he saw Diao Chan's face was tearful. Being demanded for an answer， the girl said， “I was enjoying flowers in the back garden when Lü Bu stole in to take my liberty. I tried to escape but he drove me to the pavilion with his lance…” Before long the interlocking stratagems worked out-Dong Zhuo was killed by Lü Bu.
This is a story from Three Kingdoms. Zhang Lu ordered Ma Chao to attack Jiameng Pass. Learning this， Liu Bei immediately went to his military advisor Zhuge Liang for ideas. Zhuge Liang said， “Mao Chao is so brave that only Zhang Fei and Zhao Yun can match him. But Zhang Fei and Zhao Yun can match him. But Zhao Yun is not available; only Zhang Fei is around at the moment.”
Knowing that Ma Chao was attacking the pass， Zhang Fei came to ask for a fight against him. Pretending not to hear， Zhuge Liang said to Liu Bei， “Ma Chao is attacking， and only Zhao Yun can defeat him.” Feeling snubbed， Zhang Fei noted his past merits and shouted， “If I can not defeat Ma Chao， I am willing to be punished according the rule.” Only then did Zhuge Liang nod his agreement. Liu Bei himself acted as the chief commander and ordered Zhang Fei to fight in the vanguard. Liu Bei led the army to the pass. Time and again Ma Chao challenged them to fight. At every challenge， Zhang Fei wanted to engage him， but was stopped by Liu Bei. When Liu Bei saw Ma Chao and his army became fatigued， he ordered Zhang Fei to take on the challenge. Zhang Fei and Ma Chao fought one hundred rounds with an even hand. When Liu Bei saw that it was turning dark， he asked Zhang Fei to come back for a fight tomorrow. But Zhang Fei became infuriated and shouted， “Light more torches and get ready for a night fight. I will not return to the pass without defeating Ma Chao!” Ma Chao also pledged that he would not return to his camp without winning over Zhang Fei. Each of them mounted fresh horses to start the night fight. After another twenty rounds， Ma Chao saw that he could not win by force， so he had an idea. He pretended to flee. At the moment， Zhuge Liang arrived. He analyzed Ma Chao's situation and laid a trap for him. With Ma Chao in a fight spot， Zhuge Liang sent someone who succeeded in persuading him to fight for Liu Bei.
Note： Zhang Lu was the Magistrate of Hanning. Ma Chao was a general in Xilling (nowadays Gansu Province) under Zhang Lu.