When was Sanxingdui produced? Why do some people think that Sanxingdui civilization is an alien civilization?

Sanxingdui is a treasure of Chinese civilization! Don't always think about alien civilization! If there are aliens, and the civilization is higher than ours, and we know the existence of the earth, it will be a disaster for mankind! Because the universe is also the survival of the fittest, the existence of low-level civilization will not affect the development of cosmic civilization! If the existence of low-level civilization threatens high-level civilization, high-level civilization will not be soft! It is jealous of our civilization to say that our country has unearthed an alien civilization, which is a disguised denial and a destruction of civilization! The longer our civilization lasts, it means that we are the indigenous people of the earth! A country without civilization doesn't know where it came from! Therefore, even if there are aliens in the universe, the earth has not been found, and the earth has not found aliens! Sanxingdui civilization was built by Emperor Southern Yan's provinces (Jiangxi, Hunan, Hubei, Anzheng and other provinces) in Shang Dynasty or Xia Dynasty! Trans-provincial transportation to Sichuan!

After living in the local area for a period of time, the transportation team returned to the manufacturing base under the jurisdiction of Emperor Yan-Jiangxi Province! Look at all kinds of chimes and other blue bells unearthed in Jiangxi and Hubei, which is proof! There have been bronze castings in Jiangnan and Jiangxi since ancient times. Judging from Sanxingdui, a cash cow, it is also something that people in Jiangxi under Yan's jurisdiction inherit and admire. Judging from the bronze birds and beasts, this kind of god bird is owned by Jiangxi Millennium Bird Road. People love to watch, observe and imitate the cast bronze wares. Inferred from the exaggerated bronze that looks like an alien face, it also belongs to the bronze casting under the jurisdiction of Emperor Yan of Jiangxi. The bronze ware of the ever-burning lamp of the wild duck-shaped beast from Sanxingdui is also made of the materials of wild ducks in the provinces under the jurisdiction of Emperor Yan of the South! The origin and casting of bronze was first in Jiangxi, Hubei and Hunan! Jiangxi has always been the largest copper producing area in the world! Since ancient times! And casting copper and alchemy, smelting sword and alchemy and ironmaking are all Taoist civilizations, and Jiangxi is the birthplace of Taoist civilization! To sum up, Sanxingdui bronze relics all come from Jiangxi.