Tried to start "Concert of Asia" but failed in doing so. "Open door policy" where countries wanted to engage in fair trade, so that their reparations weren't sapping resources out of Chinese economy. Most important treaties signed - reduced each country's naval capacity (reduce arms race), countries could still maintain territories within China, Japan had to give up Shandong - this terminated Britain-Japan treaty, and Japan was now on its own.
Wasn't effective because it took 3 years to take effect. China wanted to pay France in devalued Franc, France wouldn't sign until they got their payment in gold. After the 3 years, political landscape was very different.
China wanted these treaties to be adjusted because they were so unfair, West didn't change it.