Transit in Shanghai Pudong between Helsinki and Ho Chi Minh

Yen, there is no problem in your case because your transfers in Shanghai will be covered by 24 hour visa free transit both ways. In other words, you do not need any kind of visa and you do not have to announce your intention to transit via Shanghai to anybody. I recommend that you print out your flight tickets in order to speed up the entire process. Simply speaking, it is much easier to overcome all the formalities.

Upon your landing in Shanghai, the first thing that you will do is to approach 24/144 hour visa free transit counter where you will apply for a temporary entry permit in order to be allowed to cross the immigration because you will have to collect your luggage and perform brand new check-in for your onward flight. This application is free of any charge and here you will present your flight tickets and the most convenient way is to have them printed out and at hand. You will do that both times upon your landing in Shanghai. During your longer layover you can also present your accommodation booking confirmation.

After your permit is granted, you will head to the immigration and collect your luggage in order to make a new check-in. After you do that, you will cross the security, exit immigration and reach your gate for your onward flight. It seems a bit complicated, but in reality it is not.

I hope this helps and I wish you a pleasant journey.

thank you