Zheng He made seven voyages to the West from 1405 to 1433.
Zheng He's fleet to the Western Seas is huge, and communication between ships is needed. At that time, there was no telecommunications. How could they communicate? The fleet has ships, audio signals, flags and other equipment. The fleet adopts the method of "recognizing flags during the day, lanterns at night, things in order, arm in arm from left to right, don't worry". Sometimes gongs, horns and horns are also used as communication tools in poor visibility weather. This shows that the command wisdom of ancient China people is great.
The glory of Zheng He's voyage to the West embodies the unique scientific and technological achievements of the Chinese nation in the history of world civilization.
China has long been able to determine the direction and position of ships by observing the sun, moon and stars. Zheng He's fleet combined navigation astronomical positioning with navigation compass, which improved the accuracy of determining the position and direction of the ship, and was called "holding the stars". This technology showed the world advanced level of astronomical navigation in China at that time.
The geographical navigation technology of Zheng He's voyage to the West is based on marine scientific knowledge and nautical charts, and the navigation route of the ship is determined by using nautical instruments such as log and bathymeter according to nautical charts and stitch books.
The brilliance of China's advanced navigation technology reflected by Zheng He's voyage to the West shows the great wisdom of the ancient people in China, thus creating Zheng He's voyage to the West.
Zheng He made a historic breakthrough in his seven voyages to the Western Ocean, reaching the Atlantic Ocean and crossing the Indian Ocean, the Pacific Ocean and the Atlantic Ocean. At that time, it was great to sail by wooden boat and overcome all kinds of difficulties only by natural wind. You should not only master all kinds of skills and knowledge, but also need courage and adventurous spirit.
Zheng He's seven voyages to the West contributed a lot. Zheng He's brilliant achievements belong to China and the world. From his thirties, he devoted himself to the ocean for 28 years and went to the west for the last time. He is 60 years old. But this time he didn't come back and died in Guri, India, at the age of 62.
Zheng He represents a value orientation of China people who are not afraid of difficulties and conquer nature, and a determination to open the door to cultural exchanges with the world.
Zheng He's spirit of loving his post and dedicating himself to serving the country is eternal, which deserves to be inherited and carried forward by future generations to promote the progress of human civilization.