China is a very big country, with the largest population in the world.
Many different types of transportation are used: cars, bicycles, motorcycles, trains, buses.
In big cities like Shanghai, the underground metro system is well-developed, and very popular. Using the bus is also a quick way to get around the city. Even though the city streets are busy, many people still drive cars and ride motorcycles and bikes.
The rail system in China is vast. There are fast bullet trains that go from city to city.