Travelling from EU to Philippines with a stop in Sanghai

Hi, I'm Hungarian citizen and I would like to travel to Philippines with a few days stop in Shanghai. I am about to use the 144 hour free transit.
Is it important to leave China in the same airport where I arrived or isn't is necessary?
The airport where my plane takes of to the Philippines is different to the airport I arrive to Shanghai.

On the journey backwards I will probably not leave the airport (9 hours stay). In this case do I need any visa?

Thanks!