What splendid culture and long history does the motherland have?

The splendid culture and long history of the motherland are as follows:

1, papermaking. Flocculated paper and hemp fiber paper appeared successively in the Western Han Dynasty. The map paper unearthed in Fangmatan, Tianshui, Gansu Province is the earliest known paper in the world.

2. printing. During the Sui and Tang Dynasties, there were block-printed Buddhist scriptures, calendars and poems. The earliest block-printed products in the world were diamond sutra paper printed by China in 868.

3. compass. During the Warring States period, people discovered the characteristics of magnetic permeability and invented "SiNa". In the Northern Song Dynasty, magnetic needles were used for guidance. Later, the magnetic needle was installed on the compass and made into a compass for navigation.

4. gunpowder. Gunpowder was first mentioned in the book Zhen Yuan Miao Dao lue in the Tang Dynasty, and it was used in the military at the end of the Tang Dynasty. In the Northern Song Dynasty, gunpowder was widely used in the military, and Tokyo set up "widely prepared siege fortifications".

The Imperial Calendar compiled by Liu Zhuo, an astronomer in Sui Dynasty, created a new method to calculate the movement of the sun and the moon, which was the most advanced calendar at that time.

References:

Baidu Encyclopedia-China Culture