Elon Musk has visited China several times, even though the United States has had a number of problems with China in recent years. There are a number of reasons why Musk has continued to visit China, including:

• China is a major market for Tesla: Tesla's cars are very popular in China, and the company has a large factory in Shanghai. In 2021, China was Tesla's largest market, accounting for over 30% of the company's global sales.
• China is a leader in electric vehicle technology: China is the world's largest market for electric vehicles, and the country is also a leader in the development of electric vehicle technology. Tesla has been able to learn from China's experience in the electric vehicle market, and the company has also been able to collaborate with Chinese companies on the development of new technologies.
• China is a potential market for SpaceX: SpaceX is Musk's space exploration company, and the company is hoping to launch missions to the moon and Mars. China is a potential market for SpaceX, and the company has been in discussions with the Chinese government about potential cooperation.

Despite the problems between the United States and China, Musk has said that he believes it is important to maintain a relationship with China. He has said that China is a "very important" country, and that he believes that the two countries can work together on important issues, such as climate change.

Musk's visits to China have been met with mixed reactions. Some people have criticized him for doing business with China, while others have praised him for trying to build bridges between the two countries. It remains to be seen whether Musk's efforts will be successful, but he has certainly made a significant investment in China.

In addition to the reasons mentioned above, there are also some personal reasons why Musk may have continued to visit China. Musk has said that he enjoys spending time in China, and he has made friends with some of the country's top business leaders. He may also see China as a potential market for his other businesses, such as Neuralink and OpenAI.

Ultimately, the reasons why Musk has continued to visit China are complex. There are both business and personal reasons for his visits, and it is likely that he will continue to visit China in the future.