The compass was invented some 500 years prior. The tang dynasy had already mapped the stars around 600 bc. The geographic coordinate system was created around 1590.

And you forget, ALL history is a lie.

Vikings created a similar map that predates this one by 500 years. Youre talking about cultures that did nothing but sea travel and youre surprised they were able to create a map? Do you htink after they set sail that they were just lost forever? lol

The compass was invented some 500 years prior. The tang dynasy had already mapped the stars around 600 bc. The geographic coordinate system was created around 1590.