Yuan Shikai has always been a controversial figure, especially his first half life is completely different from his second half life, which makes him a figure that China has always denied. Until recent years, people have both positive and negative comments on him.

Yuan Shikai was born in a big family in Xiangcheng, Henan Province. He taught four books and five classics since he was a child, and he especially loved the art of war. 1874, his uncle saw him idle and let him study in Beijing for ten years, but every time he failed in the imperial examination. In a rage, Yuan Shikai burned his poems and said angrily, "A gentleman should work on the battlefield instead of wasting his time on poetry."

Relying on the good relationship made by his adoptive father before, he was appointed as the deputy business office, where he prepared for the scientific research and even wrote to his brother: "If you don't get into the scholar, you will die unsatisfied." It was only because the vassal country of the Qing Dynasty, Korea, was in chaos that Yuan Shikai decided to lead troops to fight in Korea. It is also because of this war that his life trajectory has changed.

Yuan Shikai, who showed bravery in the war, was paid more and more attention by the Qing Dynasty, and was praised by the local people in North Korea when he stationed troops in North Korea. As a result, he was summoned by Guangxu and Cixi, and his official position became higher and higher. However, Yuan Shikai had already revealed his "true colors". He had a close relationship with the reformists, assessed the situation, and tipped off Rong Lu, the confidant of Cixi. Although Cixi had long wanted to crack down on the reformists, Yuan Shikai's move was undoubtedly worse.

The greatest contribution of his life was the abdication of the Qing Dynasty. Although it was the responder who made the greatest contribution to the Revolution of 1911, many people thought that he had stolen the fruits of the revolution. Of course, if he is a good interim president of the Republic of China, no one will have an opinion. Unexpectedly, he began the restoration in his later years, which also led to overwhelming national opposition.

Among them, Yuan Kewen, the son of Yuan Shikai, is also a member of the opposition. Yuan Yu 1890 was born in North Korea. He likes reading poetry books since childhood and leads a bohemian life. Because he opposed his father's claim to the throne, he was placed under house arrest, and his son Yuan Jialiu had to live in the country with his mother.

Although Yuan Jialiu studied in the countryside, he still showed his extraordinary wisdom. First, he entered the Physics Department of yenching university, then won an international scholarship at the urging of Stuart Deng Lei, and was admitted to California Institute of Technology. In addition, he received a doctorate in the United States and began to study physics. He is also the first person in the world to prove that neutrons over the earth come from secondary particles produced by primary cosmic rays in the atmosphere.

After retirement, Yuan Jialiu returned to China to visit relatives many times. He died of illness in Peking Union Medical College Hospital in 2003, and was considered as a fallen leaf.