BEIJING, Sep 8 (INP) Pakistan Air Force and People's Liberation Army Air Force of China Thursday started a joint exercise in China. A twitter by PLA airforce said that PAF, PLA Air Force joint exercise commences today on 7th September, which is celebrated as Air Force Day to commemorate PAF successful air battle against Indian Air Forces. Meanwhile, at the end of this year, Pakistan and China will hold a joint navy exercise and a joint army training for counter terrorism. Hundreds of soldiers will take part in these exercises and interact with each others. The joint training of both the armies will continue nearly 10 weeks. INP/AH