2. Official script, also called Han Li, is a solemn font commonly used in Chinese characters. Its writing effect is slightly flat, horizontal drawing is long, straight drawing is short, and it is rectangular, paying attention to "silkworm head and goose tail" and "twists and turns". Lishu originated in the Qin Dynasty and was compiled by Cheng Miao. It reached its peak in the Eastern Han Dynasty, which had a great influence on later calligraphy. Calligraphy is called "Tang Kai of Han Li".
3. The Western Wei Dynasty (535-556) was a separatist regime in China during the Southern and Northern Dynasties. Yu Wentai made Yuanbaoju, the grandson of Emperor Xiaowen, the emperor, opposed the Eastern Wei Dynasty controlled by Gao Huan and made Chang 'an its capital. It was replaced by the Northern Zhou Dynasty in 557, and experienced two generations of san huang, which lasted for 22 years. Jurisdiction over the western regions, now north of Xiangyang, Hubei Province and west of Luoyang, Henan Province, was ruled by the former Northern Wei Dynasty. In the third year of the Northern Wei Dynasty (534), Xiu Yuan, the filial piety emperor, left Gao Huan and fled from Luoyang to Chang 'an, where he took refuge in Yu Wentai, a general of the Northern Wei Dynasty, and Xianbei Xiongnu. The following year, Yu Wentai killed Emperor Xiaowu and made Yuanbaoju emperor, known as the Western Wei Dynasty in history, and the political power was actually in the hands of Yu Wentai.