Who was the first Chinese in America?

Ever since the publication of Gavin Menzies' book "1421- The Year Chinese Discovered the World" and the US version "1421- The Year the Chinese Discovered America", there has been a lot of interest on the topic of whether Zheng He "discovered" America. 

In Mexico, there are the Olmecs, which several scholars have found intriguing evidence that could be related to the Shang dynasty culture of China. There are also a lot of mysteries about the origin of native Americans and their possible association with Chinese culture. 

The "Serpent Mound" 

In the midwest of US, there are a lot of Indian mounds, which are either burials sites or ceremonial sites. The most prominent on is the Serpent Mound in Adams County, Ohio.  Serpent Mound was not built over any burials or remnants of living areas, nor were there any artifacts found in it to identify which prehistoric culture constructed it.  Nearby, however, there are several conical burial mounds built by the prehistoric Adena Indians sometime between 800 B.C. and A.D. 1. 

The peculiar thing about this "serpent" is at its mouth, there is a big "egg-like" structure. It fits the Chinese legend of Dragon with a Pearl.  Besides, the geographic orientation of the site fits perfectly with the Chinese Feng Shui concept of Blue Dragon on the Left and White Tiger on the Right. These are not found in any other cultures. 

The Octagon Earthwork at Newark (30 minutes east of Columbus)

Hui Shen the Monk

One theory is that Chinese monks reached America successfully in AD 412-413. I also learn that Monk Hui Shen spent 41 years in America (AD 458-499). America in Hui Shen's description was called Fu Sang. Another theory says Fu Sang is Japan but the description suit a place much further than Japan. (More info will be added to this section later.)