What were the natural barriers that isolated china?

The natural barriers that isolated China from the rest of the world include:

1. Mountains: China is surrounded by several mountain ranges, including the Himalayas, the Kunlun Mountains, and the Qinling Mountains. These mountain ranges made it difficult for people to travel to and from China.

2. Deserts: China also has several deserts, including the Taklamakan Desert and the Gobi Desert. These deserts made it difficult for people to travel across China.

3. Forests: China also has several forests, including the Tibetan Plateau and the Sichuan Basin. These forests made it difficult for people to travel through China.

4. Oceans: China is located on the Pacific Ocean. This ocean made it difficult for people to travel to and from China.

These natural barriers made it difficult for people to travel to and from China, which led to China's isolation from the rest of the world.