2 stop at china for less than 24 hour from india to usa

Hi there...i booked a flight with china southern from india to usa. Stops are at guangzhou for 5 hour then 2hour flight to wuhan & lay over at wuhan for 2 hour. Then it will depart from there to sfo. Do i need a transit visa. Also can you provide a link that has instruction to apply for china transit G from india. Thanks