1. It takes about 1 1 day and a half, because every number you count takes many seconds.

2 1 10,000 people would be so big if they could pull from Beijing to Shanghai hand in hand.

A city with a population of one million is a big city.

4. 1 10,000 coins add up to a building with 7 15 floors.

5. Many people can live that big! That is equivalent to living 1 14 years old.