Just a doubt

I'm Italian and I want to use a 144 hours visa free transit in Shanghai; my itinerary will be:

Frankfurt - Shanghai - Taipei (with Air China)
Taipei - Beijing - Madrid (with Air China)

Can I visit in addition to Shanghai also Suzhou and Hangzhou ? (all in 144 hours?)
Do you think I can communicate in English in Suzhou and in Hangzhou ? (this is an individual journey)
Thanks