Shanghai and Shaolin Temple Now Open!

Sad question: how many inventory slots, and in which tabs, does this content require?

Like all etc slots, also you get titles in setup, I don't know if you need to keep them or not, but each one is awarded as you do more quests and get more "close" to the city, which increases the amount of daily quests you can do. For Shanghai specifically, I don't think you need more than 3 etc slots for any one quest, I don't recall for the Shaolin Temple one. Oh, and you might one a 4th etc slot, or at least one in a coin purse, for the Yu Garden coins.