How would China contribute to the coalition?

How would China take part in the wider war against Japan?

It would receive major Allied support and tie down large Japanese land forces while the maritime coalition applied pressure at sea.

China would receive a much larger flow of coalition supplies and resources. Its armies would continue tying down substantial Japanese land forces while the naval blockade tightened. Because the Nationalist forces had not yet suffered the additional attrition of 1939-41, they could enter the coalition in a stronger position than they held later in the historical war. China's role therefore compounds Japan's overextension rather than serving merely as the political cause for American intervention.