关键词:nsdd南山大道南山大道英文南山大道向西打通工程南山大道在修几号线Zhang Zhijun's son, Xiao Long, is preparing to take the Air Force pilot exam. He has just completed his medical examination from the hospital. Zhang Zhijun is preparing to drive his son from the hospital to his mother-in-law's house to pick up his wife. However, they encountered a car accident on the way.