China's banking system has undergone significant reforms over time. It transitioned from a foreign dominated system to a mixed system to a socialist system under Mao and later established four large state-owned commercial banks in the 1970s and 80s. However, low interest rates and preferential lending to state-owned firms has fueled the growth of shadow banking, estimated at $6 trillion. If these risky loans default, it could send China's economy into crisis and impact the global economy. Further reforms are needed to increase lending competition and rates to curb shadow banking and channel funds to smaller private businesses.