After the end of World War I, from January to June 1919, the victorious countries including the imperialist powers Great Britain, the US, France and Japan opened the so-called ‘Peace Conference’ in French Paris, but in fact it was a booty-sharing conference to newly distribute the colonies. During World War I China had also participated in fighting Germany, and as a victorious country sent her delegates to participate in the conference. The Chinese delegates proposed to the assembly righteous demands like the abolishment of all privileges imperialism [held] in China, abrogating the [Japanese] ‘Twenty-One Demands’ and regaining sovereignty of Qingdao. But the conference was manipulated by countries like Great Britain, France and the US and rejected the just demands of China. Without reason it even handed over to Japan the sovereignty over Shandong which had been occupied by Germany before the war. When the news arrived in China, it made the fire of rage squeezed in the Chinese people's hearts erupt like a volcano!

In 1922, the delegates of nine powers signed the ‘Nine Powers’ Convention’. This convention declared to respect the integrity of Chinese sovereignty, independence and territory and to observe the principle of ‘open door’ and ‘equal opportunity’ for all countries in China. In reality, this was [only] to serve America's expansionism in China.