Just a doubt

Your both itineraries are eligible for 144 hours visa free transit in Shanghai and in Beijing, of course if all the possible stops are mentioned precisely. You are definitely allowed to visit both Suzhou and Hangzhou because they are located in Jiangsu and Zhejiang provinces that along with Shanghai city area form pretty large Shanghai transit zone. You can use every available means of transport between the mentioned places. As far as the communication is concerned, you will be just fine with English alone. Of course, you will have to engage more effort that in some other parts of the world, but you will soon realize that this is not such a problem at all.

what do you mean " if all the possible stops are mentioned precisely" ? Are you referring to flights ?
Frankurt - Shanghai and Shanghai - Taipei are no stop flights,while Beijing is a seven hours transit and I don't want to leave the airport (I don't want to visit Beijing)

Dear, your itinerary is eligible for 144h visa exemption transit in Beijing.