I'm not sure if there is a direct flight to Gong Ming, but there must be one in shajing bus station. You can get off at Songgang or Xinqiao, get off at National Highway 107, and then drive to Gong Ming for 20 minutes. It should take about two and a half hours from Nanhai to Shenzhen, and the fare should be around 100. There is no fare increase for the direct bus from Pearl River Delta to Spring Festival travel rush peak, and the fare should be around 90.