First, the rulers
Speaking of the Jin Dynasty, everyone should know which dynasty they are talking about. In fact, Sima Jia established the Jin Dynasty to usurp power and seize Cao Jia's world. Historically, this period was called Wei, Jin, Southern and Northern Dynasties. Although the founder of the Jin Dynasty was Sima Yan, the grandson of Sima Yi, the foundation of the Jin Dynasty was actually laid during Sima Yi's period. In 266 AD, Sima Yan successfully abolished the Wei Emperor and destroyed the State of Wu. The Jin Dynasty unified the Three Kingdoms, which was called the Western Jin Dynasty in history. If it's just here, it's still a unified dynasty in China, and it shouldn't be annoying.
However, things just didn't go your way. The Jin Dynasty was founded by Sima Yan, and the Sima family was a clan. Cao Cao's Cao Wei actually suppressed the clan, but under the control of the Sima family, the clan began to grasp power and began to interfere in politics. Another decision made by Sima Yan directly led to the demise of the Western Jin Dynasty. He made Sima Zhong emperor, which is what he said. Why not eat minced meat? The foolish emperor Sima Zhong. Sima Zhong had a vicious wife named Jia Nanfeng, and it was this Jia Nanfeng that caused the rebellion of the Western Jin Dynasty, which eventually led to the rebellion of the Eight Kings.
The people who experienced the war in the Three Kingdoms finally lived a peaceful life for a few days and experienced the rebellion of the Eight Kings. All the foundations gained from these years of recuperation have been squandered, resulting in extravagance and waste. Five chaos in China, northern minorities invaded the Central Plains one after another, and the hollowed-out rulers were unable to resist, so they could only do whatever they wanted. And these conference semifinals, will seize the han Chinese? Biped sheep? Eat, it can be said that during that time, the Han people suffered humiliation. Later, Du Nan, a righteous official in the Western Jin Dynasty, established the Eastern Jin Dynasty in Jiankang. So the clan came to power, the cronies ran rampant and eventually perished. Such a dynasty is really unpopular.
Second, the Yuan Dynasty
Similarly, the Yuan Dynasty was a unified dynasty. The soldiers of the Mongolian army led by Genghis Khan broke through countless countries and conquered countless lands. Kublai Khan inherited his legacy and finally established the Yuan Dynasty, ending the chaos in the late Song Dynasty. However, the Yuan Dynasty was also unpopular. During this period, there was no foreign invasion, but there were internal worries. With the change of the royal regime in the Yuan Dynasty, the infighting was fierce. However, not only because of this, the Yuan Dynasty was criticized the most, but also because the rulers of the Yuan Dynasty did not treat the Han people as human beings.
Kublai Khan is fine, probably because of the influence of Genghis Khan. Kublai Khan was very kind to the Han people. However, with the change of the royal regime, Kublai Khan's ambition was not inherited. Other rulers in the Yuan Dynasty divided all ethnic groups into three or six classes, and the Han nationality was one of their goals. Especially at the end of the Yuan Dynasty, the control of the Han people in the Yuan Dynasty had reached a terrible level.
To sum up, the dynasties we don't want to mention in history textbooks, which everyone doesn't like very much, are Jin Dynasty and Yuan Dynasty.