Flip all the cards in a shared deck, but not others?

Kia ora. I just imported a shared deck (Chinese) but the order (front-back) is the opposite to how I have all the decks I’ve made myself (for Māori). I can’t work out how to flip the order of the cards in just the Chinese deck (all at once) while leaving the other cards as they are. My Anki skill level is pretty basic, FYI. Thank you.