Rebuttal to the Chinese Mayans connection

I refer to the article of my good friend, Jose Antonio, on the possible Chinese Mexicans (Mayans) connection (see the preceding post).  However, I came across an article written in English appearing in a China magazine, which said there is another group of Chinese scholars who does not subscribe to such connection. It said as follows:

Professor Xu Shicheng is one of that group. An expert in Latin American studies with the Chinese Academy of Social Sciences, he is also the vice president of the Chinese Association for Latin American Studies. He says the two groups of scholars not only exist in China, but worldwide. One group cannot convince the other of its arguments.

Xu Shicheng has been to several central American countries to visit Maya ruins. He says that the evidence of the Chinese connection is far from convincing.

“Take the language for example. Deciphered Maya hieroglyphs are just a tiny proportion of the whole. Much of its highly complex systems of writing were recorded in books made from bark paper. Because of their perishable nature and book-burning by Spanish invaders, only four books remain today. The Maya hieroglyphs still remain as a great mystery. Therefore, study based on the deciphered ones is not convincing enough.”

Xu Shicheng admits there are similarities between the cultural relics of the two civilizations. But he prefers to explain it as coincidence, saying that such similarities could also be found between Chinese civilization and other ancient civilizations. He points out that differences between the two civilizations far outnumber the similarities. For instance, Maya’s main form of architecture was stone pyramid temples, while in China, it was wooden palaces; Maya’s primary crop was corn which resulted in their worship of the God of Corn, but the major crop in ancient China was rice. What’s more, the Mayans didn’t know how to make metal tools, how to raise livestock, and how to make wheels, which were mastered by ancient Chinese.

Xu Shicheng points out that Maya and Chinese are two independent civilizations, which don’t share the same origins. “I believe that Maya civilization was built on the inherited inventions and ideas of earlier civilizations in central America such as the Olmec. And Maya people are not gone, since there are still some two million descendants of Maya living in Mexico.

Professor Xu Shicheng points out that some people even say the Mayans were extraterrestrial beings, which is sheer fabrication. But he says there are still many mysteries of Maya, which are beyond people’s imagination. For example, why did it disappear all of a sudden while there were no signs of famine, plague or war? Without metal tools and animal-drawn vehicles, how was it possible to quarry huge slabs in distant mountains and transport them for the construction of magnificent temples? How to reconcile such astonishing cultural achievements as a calendar that could work for 6000 years without error, complex computations in terms of billions, and an exquisite system of hieroglyphs with productivity represented by slash-and-burn farming? What secrets are the statues with their stern expressions and the esoteric language inscribed on the tablets supposed to tell?

Professor Xu Shicheng hopes more people will begin to research the answers to these mysteries.

I would appreciate it if any of my friends could translate the above passage into Spanish for the benefit of my Spanish-only readers, of whom my friend Jose Antonio is one of them.