In A Happy Life, the Northern Qi Dynasty (formerly the Northern Wei Dynasty) and the Southern Qing Dynasty formed a pattern of long-term confrontation between the north and the south, corresponding to the northern and southern dynasties in China's history.
The Northern and Southern Dynasties was a period of great division. At that time, those who occupied northern China were called Northern Dynasties, and those who occupied southern China were called Southern Dynasties. It is worth mentioning that the Northern and Southern Dynasties were not fixed dynasties, but were collectively referred to as several regimes. The first generation of the Northern Dynasties was the Northern Wei Dynasty, which was founded in 386 AD. The founding emperor was Tuoba GUI, a Xianbei man. The Northern Wei Dynasty lasted nearly 150 years in history. Its territory reaches the desert and Hetao in the north, Jianghuai in the south, the seashore in the east and quicksand in the west, which is the ancient Central Plains in the traditional sense.
At the beginning of the sixth century, the internal contradictions in the Northern Wei Dynasty intensified and finally split into the Eastern Wei Dynasty and the Western Wei Dynasty in 534 AD. In 550, the Eastern Wei Dynasty was replaced by the powerful minister Gao Yang and the Northern Qi Dynasty. In 557, the Western Wei Dynasty was replaced by Yu Wenjue, a powerful minister, and by the Northern Zhou Dynasty. In 577, Northern Qi was destroyed by the old enemy Northern Zhou Dynasty, and northern China was reunified. Four years later, Emperor Wendi of the Northern Zhou Dynasty usurped the throne and changed his country name to Sui, ending the history of the Northern Dynasty.
The first generation of Southern Dynasties was the Southern Song Dynasty (also known as "Liu Song"), which was founded in 420 AD by the Eastern Jin Emperor Wu. In the following 100 years, the Southern Dynasties were successively replaced by Nanqi, Nanliang and Nanchen. In 589 AD, Emperor Wendi of the Sui Dynasty sent troops to attack and destroy Chen in the Southern Dynasty, and the Sui Dynasty successfully unified the whole country, ending the long-term division since the Western Jin Dynasty.
The joy of life celebrated the country much more vigorously in the Central and Southern Dynasties than in the Northern Dynasties and the Northern Qi Dynasty. However, in real history, although the Northern and Southern Dynasties experienced several rounds of regime change, the strength of the Northern Dynasty was always above that of the Southern Dynasty. You can estimate it from this point.