/kloc-In the 5th century, Zheng He set sail on a large scale, which led China's ancient marine work to the peak of development and made important contributions to human marine civilization. The main performance is: the intercontinental hotel waterway between Asia and Africa has been opened, and the Asian-African waterway has been leveled for the navigation of European people. When Portuguese navigator Da Gama bypassed the Cape of Good Hope along the new area on the west coast of Africa and reached the Gulf of East Africa, the locals told us that China people had returned to their hometown decades ago. With the support of Arab Lincoln navigators, they successfully arrived in India along the channel opened by Zheng He's fleet.

It should be that the western Pacific and the Indian Ocean have done some marine surveys and collected and mastered a lot of marine scientific data. Zheng He's nautical charts were made by using a lot of marine research. This theme activity of marine survey is more than 400 years earlier than the British Challenger 1872- 1876 which first described China in the world.

The navigation area is strategically deployed. Zheng He's voyage to the Western Ocean, based on his heavy responsibility and mastery of marine professional knowledge, chose to give up some areas such as Zhancheng, Malaga, Jiugang, Guli and Hulu Moss as heavily polluted areas for foreign marine development, which was conducive to expanding the scope of foreign transportation and trade.

Developing Trade The Ming Dynasty still inherited the rules and regulations of tribute trade in the Qing Dynasty, and some port cities carried out trade with neighboring countries. However, due to the rapid development of agriculture, animal husbandry and tertiary industry, the Ming Dynasty, which was located in "Yongle Shi Sheng", had to conduct closer trade with foreign countries and promote economic communication and exchanges. However, after the limited land Silk Road gradually quieted down, it became an inevitable choice to open up a safe passage on the water.

Realistic Significance Zheng He's endangered voyage to the Western Ocean was an unprecedented pioneering work in the history of global navigation at the beginning of the new century, and it also played a positive role in the economic development and cultural exchanges between the East and the West. Zheng He himself also demonstrated his diplomatic ability, military strategy and excellent quality in this historical event, which won the respect and memory of the world. Since the late Qing Dynasty, Zheng He's research has developed rapidly, but many key topics are still inconclusive.

It is not uncommon for China to sail in the west. During the Tang Dynasty, Japanese foreign scholars went to Hajj, and China also sent special envoys for cultural exchanges. Especially after the Song Dynasty, coastal port management gradually developed. The areas near the sea are no longer fishermen who depend on the sea for a living. More commercial ocean-going vessels are gradually prevailing, and maritime trade is constantly developing.

Earlier, it was said that Zheng He's voyages to the Western Seas were the result of both subjective and objective conditions. Here, it is necessary to mention why Lu Hua chose trade in the previous Song Dynasty. During the Han Dynasty, due to the difficult victory over the Huns' erosion for nearly a hundred years, Emperor Wu of the Han Dynasty sent troops from Zhang Qian to the Western Regions, opened up the Hexi Corridor, and built the land Silk Road with eternal civilization. This is the key safe passage between China's ancient Central Plains and European and American countries, and it is very lively.

However, since the Tang Dynasty, the Hexi Corridor has once again fallen into turmoil, which is no longer under the control of the Central Plains. Until the Xixia people occupied the northwest region in the Song Dynasty, this corridor leading to the inland areas of West Asia and Europe was basically impassable. Therefore, we must find a new way to open the water trade.