In the first year of Yankang (220), Cao Pi established the Wei Dynasty on behalf of the Han Dynasty, and in the following year, Liu Bei was called the emperor in Cheng (Cheng), continuing the Han family, and later generations were called Shu Han, and in the first year of Huanglong (229), Sun Quan was called the emperor in Wuchang and formally established Sun Wu.

In December of the fourth year of Jingyuan (264), Liu Chan surrendered, and Shu Han was destroyed; In the first year of Taishi (266), Cao Wei Emperor Cao Huanchan was located in Sima Yan, Cao Wei perished, and the Western Jin Dynasty began; In the first year of Taikang (280), the Western Jin Dynasty destroyed Wu and completed the unification of the world.

【The Development and Fall of Cao Wei】

In the first year of Yankang (220), Cao Pi forced Emperor Xian of Han to make concessions and established the Wei Dynasty, that is, Cao Wei in the Three Kingdoms, Cao Pi, Emperor Wen of Wei, and Cao Rui, Emperor Ming of Wei, were the only two emperors with real power in the history of Cao Wei.

During the Cao Pi period, its external environment was very superior, because of the internal bar between Sun Wu and Shu Han, and the northern nomads had not yet risen, so Cao Pi could wantonly trouble Sun Quan and suppress Sun Wu with strong national strength.

Wait for the Cao Rui period, Xianbei, Liaodong, Shu Han have undergone great changes, Xianbei began to rise under the leadership of Kirbineng, Liaodong's ambitious Gongsun Yuan replaced his weak uncle Gongsun Gong, Zhuge Liang developed internal affairs, pacified Nanzhong, and also restored national strength, coupled with the threat of Sun Wu, Cao Rui's external situation was quite bad, in the Cao Rui period, Cao Wei was generally in a defensive posture, and later Kirbineng, Zhuge Liang and others died, Cao Rui sent Sima Yi to pacify Liaodong, and the external situation was reversed.

However, in the later period of Cao Rui, because of the interference of Liu Fang and others, Cao Rui let Sima Yi and Cao Shuang take power when he was dying, assisting the young Cao Fang, but Cao Shuang took the opportunity to seize power, and later even imprisoned the Empress Dowager Guo in an attempt to make a mess, and other ministers had to choose to help Sima Yi fight against Cao Shuang. After the coup d'état in Gao Pingling, Cao Wei became Sima Wei, and the power fell into the hands of the Sima family.

After the death of Sima Yi, his eldest son Sima Shi abolished Cao Fang and set up Cao Chao, after Sima Zhao was crowned duke, Cao Chao heroically launched a coup d'état, although it failed, but also forced Sima Zhao to give up the position of Jin Duke and Prime Minister who had arrived, Cao Wei's last emperor Cao Huan was a complete puppet emperor, after Sima Zhao's death, his eldest son Sima Yan changed the dynasty in the first year of Taishi (266), and established the Jin Dynasty on the basis of the Wei State.

【The Development and Fall of Shu Han】

After Cao Pi was proclaimed emperor, Liu Bei, in order to continue the Han dynasty, proclaimed himself emperor in Cheng in the following year, the first year of Zhang Wu (221), and became the founding monarch of Shu Han. After Liu Bei's proclamation as emperor, Guan Yu took revenge and recaptured Jingzhou, and launched a campaign to attack Wu, but was defeated by Lu Xun at Yiling, and died of illness in the White Emperor City soon after.

After Liu Bei's death, Liu Chan succeeded to the throne, and Shu Han entered the Zhuge Liang era. At that time, Shu Han first Guan Yu failed in Jingzhou, then Shangyong and other places were lost because of Meng Da's rebellion, and finally Liu Bei was a fiasco in Yiling, with a serious loss of territory and talents, and there was a large-scale rebellion in the south and central China, and Zhuge Liang was in trouble at the beginning of his reign.

In this situation, Zhuge Liang first concentrated on recuperation, restored national strength, contacted Sun Wu, and reorganized the alliance, and then sent troops to quell the rebellion of Nanzhong Yonghong and others in one fell swoop. After Cao Pi's death, Zhuge Liang went north to Hanzhong, preparing to start the Northern Expedition, he first tried to lure Meng Da, and then personally led the Northern Expedition five times, but unfortunately failed to succeed, and finally died of illness in Wuzhangyuan.

Before Zhuge Liang died, Jiang Wan and Fei Yi were determined to be his successors, although Jiang Wan and Fei Yi continued the policy of the Northern Expedition, but the scale of the Northern Expedition was greatly reduced, under the management of the two, the national strength of Shu Han has been maintained quite well, Cao Shuang once raised troops to attack Hanzhong, but the result was a big defeat.

In the sixteenth year of Yanxi (253), Fei Yi was assassinated and died, after Fei Yi's death, Shu Han began to decline, when Shangshu ordered Chen Ji to contact the eunuchs on the one hand, on the other hand, connived at Jiang Wei's Northern Expedition, after which the scale of the Northern Expedition of Shu Han was greatly expanded, and the national power was seriously consumed.

In the later period of Jiang Wei's Northern Expedition, he encountered Deng Ai, twice defeated by the enemy, and was at odds with Huang Hao internally, and the contradictions between the two sides intensified.

【The Development and Fall of Sun Wu】

Sun Ce's foundation on the basis of his father Sun Jian conquered Jiangdong, became a prince, Sun Quan inherited his brother's business, occupied Yangzhou, Jingzhou and Jiaozhou, the first year of Huangwu (222) was named the king of Wu by Cao Pi, the first year of Huanglong (229), Sun Quan officially proclaimed himself emperor in Wuchang, and established the Sun-Wu Dynasty.

Because Sun Quan had fooled Cao Pi in the matter of protons, he was deeply hated by Cao Pi, and Cao Pi had attacked Wu three times when he was alive, one of which was the largest for the first time. After Cao Pi's death, Sun Quan took advantage of Cao Rui's just coming to power to send troops to provoke one after another, and united with Liaodong, but none of them could shake the foundation of Cao Wei.

After the death of Zhuge Liang and others, Sun Quan also slowed down his offensive against Cao Wei because of his repeated northern expeditions to no avail. After the death of Sun Quan's eldest son Sun Deng, his third son and grandson were the crown princes, and the fourth son and grandson were the kings of Lu, giving the same treatment to the two, acquiescing in Sun Ba's challenge to Sun He's status, the dispute between the two palaces broke out, because the court was almost divided at that time, the ministers chose to stand in line, the two parties were seriously opposed, and quite a number of officials lost their lives because of this matter, after Lu Xun's death, the contradiction eased for a while, but Sun Quan finally abolished Sun He, executed Sun Ba, and took the young Sun Liang as the prince.

During the Sun Liang period, because the emperor was young, Zhuge Ke, Sun Jun and Sun Qi were successively in charge of the government. Zhuge Ke was originally the desired candidate, but after he took power, he was greatly disappointed, insisted on going his own way to crusade against Wei, suffered a tragic defeat, and was killed by Sun Jun's coup d'état after returning to Beijing. After Sun Jun took power, he forced the former prince Sun He to die, and later died of illness, Sun Jun entrusted the great cause to his cousin Sun Qi, who was only 26 years old before his death, Sun Qi killed ministers in history, abolished the king, and was executed after Sun Xiu came to power.

Sun Xiu appeased the people in the early part of his reign, set things right, and the state of Wu returned to stability, but in the later period of his reign, he handed over the imperial court to Puyang Xing and Zhang Bu, and tacitly ignored the power of the ministers.

After the destruction of Shu Han, the situation in Wu was also turbulent, so the minister took the elder Sun Hao as the emperor, but Sun Hao was an out-and-out tyrant and faint monarch at that time, he killed the queen mother, killed the prime minister, slaughtered many officials, forced many relatives, reigned for more than ten years, and made the Wu country into a miasma, and finally destroyed by the Sima family.

【The Rise of the Sima Family】

Sima Yi was the founder of the later rise of the Sima family to establish the Jin Dynasty, he became the de facto master of the Wei State after the coup d'état in Gaopingling, and suppressed the Cao clan and quelled the Wang Ling Rebellion, paving the way for Sima Shi and Sima Zhao to come to power.

Sima Yan is the second-generation leader of the Sima family, the eldest son of Sima Yi, he repelled the invasion of Wei Zhuge Ke, quelled the Biqiu Jian Rebellion, abolished Cao Fang, who intended to deal with the Sima family, and renamed Cao Chao as emperor at the suggestion of Empress Dowager Guo.

Sima Zhao is the second son of Sima Yi, the younger brother of Sima Shi, Sima Yan died because of a serious eye injury, because he had no children, so he entrusted the great cause to Sima Zhao, Sima Zhao pacified the Zhuge Rebellion, although because of the change of manna, he was forced to temporarily give up the position of Duke of Jin and Prime Minister, and later Sima Zhao sent troops to destroy Shu Han and was named the king of Jin, laying the foundation for the change of dynasty of his eldest son Sima Yan.

After Sima Yan came to power, he followed Cao Pi's example, forced Cao Huan Chan to concede, established the Jin Dynasty, and later destroyed Sun Wu, completing the hegemony of dominating the world.

Ps: I won't write about the Jin Dynasty, on the one hand, this book is the Three Kingdoms of the late Han Dynasty, mainly about the late Eastern Han Dynasty and the three kingdoms of Wei, Shu and Wu, and I didn't plan to have too much involvement in the Jin Dynasty at the beginning; On the other hand, the main information about the Jin Dynasty "Book of Jin" is a bit too undisciplined, this book is quite not objective, and the reference value is not great, so I don't really want to write about the Jin Dynasty.

I'll start working on the preface tomorrow, and I'll wait for the text before moving on to the final summary.