China is aiming to rein in the rise of leverage in the Chinese financial system. The vice governor of the People's Bank of China -- Yi Gang -- says China's overall leverage ratio stood at 234 percent at the end of last year. 

Yi says the ratio increased a too-quick 9 percentage points in one year. Yi says that because of that, China should optimize its leverage structure to make it more efficient and sustainable. The vice governor says China will also provide credit support for small and medium-sized companies that have been facing financing difficulties.