Anyone who have ever been to Shanghai and know some super stores act to purchase cake stuff. Also interested if someone knows about classes or other happenings in Shanghai you have to visit when you are there.
Sorry no one has been able to help you. I can't either. I just wanted to say welcome and I hope you can find lots of other information on this site to help you.
Have you tried using YouTube to teach yourself some things? There is sooooo much information out there.