July 27, 2009. Zhu David (left) and Zhu Juan (right) are known as China's "Schumacher" brothers. After several thunderstorms, the blazing sun once again dominated the sky of Beijing. Zhu Zhijun, the operator of Xingang Karting Circuit said that the circuit now has dozens of members, aged from 10 to over 30 years old. Some members even专门came from He...