I think it’s Japan is the reason why everyone points fingers at China and the reason why chinas a communist country

Yes, China and Japan have a long and complex relationship that spans centuries. This relationship includes deep cultural and historical ties, as well as significant modern-day economic and political connections.
Historically, Japan was heavily influenced by Chinese civilization, adopting elements of its writing system, architecture, and religion. However, the relationship has also been marked by conflict, particularly during the late 19th and early 20th centuries. Today, while their economic ties are extremely strong—China is Japan's largest trading partner—there are also ongoing tensions related to historical issues and territorial disputes.
Would you like to know more about a specific aspect of their relationship, such as the historical, economic, or political dimension?