Do I qualify for a 144-hour visa-free transit

I will be traveling in SE Asia (Malaysia, Singapore and Hong Kong) from August 11th - 23rd. I fly from Hong Kong to Beijing on August 24th (Capital International), stay in Beijing for 4 days, then fly from Beijing back to Washington, DC.

My route would thus be Hong Kong - Beijing - Washington, D.C, dates August 24th-28th, 2018.

Please confirm that I would qualify for a 144-hour free transit. Thank you!