Being American, we learned there were 2 bombs dropped and we ended the war. In university I learned there were more nuances to the end of the Pacific theater. Now after traveling through Asia I'm hearing more and more about China bringing Japan down, including keeping the majority of Japanese Imperial Army tied up in mainland China. So how much did China participate in the end of Imperial Japan?
I would direct you to my answer on a related question: How significant was the Second Sino-Japanese War in World War II?
It must be emphasised that this is still very much a debated topic among scholars - Western and Japanese scholars tend to downplay the role of China in the larger Pacific War, which I agree with to some extent as seen in the above answer, while Chinese historians tend to emphasise Chinese contributions to the theater.