I have a flight leaving 10/2 from Dulles and arriving in Beijing on 10/3.

I'm staying in the BJ or Tianjin area until 10/7. On 10/7, I'm cruising from Tianjin and arriving on 10/19 in Singapore. Leaving Singapore on 10/22 and arriving in U.S. on 10/23. Do I meet the 144 hour visa-free requirements?