Do I need 24 hr or 72 hour free transit visa?

I have a scheduled flight From CEB international airport on February 25, 2019. My final destination is the United States, but I will be stopping in China.
I depart from CEB at 21:15. I arrive in at CKG at 1:30 on Feb 26. I have a layover at CKG until 17:15. Next I depart from CKG and arrive at HGH at 19:25. I have a layover at HGH until 23:55. At 23:55 on Feb 26 I depart from HGH and I will arrive in the United States at 19:45 on Feb 26.

My question is, do I need to get a 24 hour, or a 72 hour twov? Or do I not need any transit visas? Please help.
Thank you! Have a good day!