How was the Chinese civil war a proxy war?

The Chinese Civil War (1927-1949) was a proxy war as it involved significant foreign intervention and support for both the Nationalist (Kuomintang) and Communist forces. The United States provided military and financial aid to the Nationalists, viewing them as a bulwark against communism, while the Soviet Union supported the Communists with weapons, training, and strategic guidance. This external involvement intensified the conflict, as both superpowers aimed to expand their influence in Asia, making the war a battleground for competing ideologies. Ultimately, the outcome shaped the geopolitical landscape of the region during the Cold War.