Transiting 2 cities in China

Hi everyone I have an Indian Passport & I am travelling from TRV(India) to YVR(Canada) via CMB & KMG. The flight details says that it has a stop in NKG (Nanjing-China) while travelling from KMG to YVR. But the flight number is the same. So i am confused that do I need to take a Transit G or something?. The layover time in Kunming is only 8hrs.
Please help me.
Thanks