Flying US to Shaghai Pudong accompaning friend who is there for business.

We arrive Saturday evening February 24, 7:30 PM and are staying at a Shanghai Hotel for 5 nights. We will fly Shaghai to Singapore Thursday morning March 2. Our return flight to US leaves Singapore March 11 and has a connection in Guangzhou China with a 2 hour layover. Can I travel using the 144 hour visa free transit program?

Thanks,
Framl