It's hard to say whether it's true or not. Foreign media have doubts. Gunnar Thompson, an ancient American cartographer, and gavin menzies, the author of 142 1: China Discovered America, also came to the scene of the paper appraisal meeting held in Beijing. Thompson believes that this map should have been brought to the west by Zheng He during his voyage to the West, which played a vital role in Columbus and da Gama's voyage to the West. Columbus and da Gama both recorded in their nautical diaries that they had maps in their hands, so their maps should refer to "the general map of the world". Menzies agrees with Thompson. Some foreign media seem to be more enthusiastic about the discussion that "China people have discovered the new continent" than China media. After the British "Economist" reported it, The Independent and Daily Express also reprinted it. Time magazine questioned the map. "There is still widespread controversy about this map, especially the use of language that puzzles professional historians. An expert from a Belgian university said that if you look carefully, there are really many strange things. Since it is a copy of the map of 14 18, the language should also be from that era. The' Daqinghai' mentioned in the picture is the South China Sea in China, and its name' Daqinghai' was not used until 1644. " China scholars questioned that some scholars claimed that the map was seriously damaged. Liu Gang said frankly, whether it is true or not, the appraisal results of the paper can explain the problem. I also answered some serious injuries. For example, some scholars say that there are simplified characters on the map, but there are no simplified characters in ancient times. Liu Gang explained that simplified characters were only a process of standardization and promotion after the founding of the People's Republic of China, but they existed a long time ago. Open ancient books, and simplified characters can be seen everywhere. In response to the problem that some scholars put forward that the place names in the map do not match, Liu Gang said: "In fact, because this' General Map of the World' was copied from the map of all the tributes in the world during the Qianlong period of the Qing Dynasty, the place names of the Qing Dynasty had to be used to avoid disaster." Nevertheless, some historians in our country still question this map. Gong Yingying, a famous historian and professor at the School of Humanities of Zhejiang University, pointed out that the universal map of the whole world is not based on the map of China in Zheng He's era at all, but on the map of the world drawn by Europeans in the17th century. Gong Yingying believes that this map was drawn in 1763, and just three years before the map came out, that is, in 1760, the French missionary Michel Benoist drew a complete map of Kunyu as a gift for the 50th birthday of Emperor Qianlong. Earlier, Ferdinand ferdinand verbiest, a Belgian missionary, also drew a complete map of Kunyu. The painting method of The World Panorama is the same as that of Ferdinand ferdinand verbiest's The Panorama of Kunyu, but the painting method of the North and South poles of the earth is different from that of Australia. Similarly, Hou Yangfang, a professor at China Historical Geography Research Center of Fudan University, thinks that the map is fake. "Carbon dating method can't explain the problem at all, it can only prove that paper and ink were at that time. Both paper and ink are easy to preserve. There are many ancient ink marks that can be seen now, even in the Southern and Northern Dynasties. So as long as we find the paper and ink at that time, we can forge things at that time. This is a common and very common method of forging calligraphy and painting. It doesn't mean that this painting was painted by people at that time. "