Although an interesting piece of information, one must not over-interpret it. Until, there is substantial evidence about it preferably from multiple sources also backed by what makes appeal to reason and is a physical possibility, one must not overly interpret this. I don't know how can one in his/her lifetime traverse vast stretches of land from Afg all the way to Bairang strait and then north and south America...and then also make the journey back home.

Physical possibility? The ancient Egyptians knew the exact circumference of the earth which means they knew the earth was round. Evidence have been found in Baghdad that people in the 12th century knew that splitting the smallest unit of matter would unleash so much energy that it would destroy the city of Baghdad.

Sailors with very basic ships have made it around the world. Do you not know all a person needs is courage to make the voyage. I would not be surprised that evidence would be found one day that Native Americas had made it to Europe, Africa or the South Pacific.

Nobody "discovered" America. It had already been discovered by the Aboriginal people long ago, around the Ice Age.

However, this information nonetheless is pretty neat if it's true.

I have to admit I LoL'd at this.

I remember reading somewhere (Nat Geo?) that they had discovered the wreckage of a ship built in the Chinese style off the coast of Washington state, and that local American Indian legend recalls meeting with travelers from across the sea many years before contact with Europeans.

If you're interested in pre-Columbian contact theories you should read the works of an adventurer named Thor Heyerdahl, who attempted to retrace the voyages of early explorers using the same technology (reed boats and rafts).