I was a little confused about whether I can get the 144 hour transit without visa.

I am visiting China in April
I arrive from Osaka Japan to Shanghai PVG
I then fly back to England 5 days later however my return flight is:
Shanghai SHA to Beijing PEK
2 hour layover
Beijing PEK to London LHR
As my return flight has a transfer through China am I still able to get the 144 hour twov?