It has the world's oldest continuous civilization.
It is the third largest country in the world in area.
It has two of the world's longest rivers (the Yellow River and the Yangzi); two of the largest deserts (the Gobi and the Taklamakan); the world's highest mountain (Qomolangma Feng - Mt Everest).
It is the largest country in terms of population, about a quarter of the world's total.
Here you'll find a wealth of information and resources about the most populous country on the Earth.