I just read on BBC news that old old map of earth is being relooked, as it could prove that China, the buzzword in today's economy, was the first to discover the Americas and Africa,

This will mean that the lesser-discussed Zheng He stepped foot on the Americas in 1418, meaning he beat Christopher Columbus to it. Tests are being done on the map to gauge its age, and the results will be available in February.

Mister Columbus (I think) was quoted as saying "Let China sleep, for when she wakes, the world will tremble".

I think he was just paranoid that the world would discover his dirty little lying secret.