Why did the future space launch center choose Wenchang instead of Sanya?

The first point: the land is vast and sparsely populated, and it is possible to build a restricted area. As we all know, Longlou Town covers an area of 98 square kilometers and has a total population of more than 20,000 people. The eastern suburb covers an area of 88 square kilometers with a total population of more than 40,000. According to the population density index, Longlou is a sparsely populated area. The population density in the eastern suburbs is not low, but it is worth noting that more than 80% of the population in the eastern suburbs live in the line from Shangpo Township to Wharf, among which Jianhua Mountain, Honghuashan Mountain and Dong Jiao Market are the most, which is the so-called "Qinger" area; However, from uphill to Longlou Triangle Road (Donglong intersection), the population is relatively sparse. Basically meet this condition. Sanya also has advantages in this respect.

The second point: the terrain is flat and open, and the geological structure is stable. Longlou Starlight Brigade is close to the seaside from Fumian, Zhongshan and Taishan in the eastern suburbs, which is a very wide slope; The line from Changsha in the east of Wenchang to Coconut Forest in the east suburb is all granite with a thickness of tens of kilometers, and its geological structure is extremely stable. We are better than Sanya in this respect.

The third point: good meteorological conditions: sunny days, low wind speed and low humidity. The latitude of Wenchang is very close to that of Sanya, and there is little difference in climatic conditions. Although it is not as sunny as Sanya, it is far in line with the number of sunny days needed for launching satellites. The annual average wind speed is smaller than that of Sanya, and the humidity is the same. We are still superior to Sanya in this respect.

The fourth point: the water quality is good. There is not much difference between the two places.

Fifth, it meets the requirements of national defense security. This is particularly important. The country values Wenchang because Wenchang is in Hainan, and its national defense safety factor is higher than other places. Maybe some friends think that the safety factor in the mountainous area in central Hainan is not higher? This statement is very poor, and many of the above conditions have not been met.

From the map of Hainan, Wenchang is located in the northeast of Hainan, shaped like a "turtle head", closest to Zhanjiang military port and closest to the Pearl River Delta in a straight line, which is conducive to the protection of mainland shore-based missiles, warships and submarines and enjoys the same treatment as Hong Kong, Macao, Guangzhou and Peng, which is nothing more than the safest; Another is to stay away from controversial countries, mainly Vietnam, the Philippines, Indonesia and other countries. Although their war with China is undoubtedly throwing eggs at stones, we should focus on them as hidden dangers. On the other hand, Sanya has to pay several times more military defense than Wenchang, because: first, it is located at the southernmost tip of China, close to the above-mentioned countries, and close to the high seas navigation line of the South China Sea, which provides convenience for reconnaissance bases of hostile countries; Second, it is outside the effective range of land-based guided projectiles; Third, the frontier outpost has no danger to rely on and lacks strategic depth. At this point, I lost to Wenchang again.