The Galaxy is Just Packed!
From the setup rules, re: filling provinces...
After placing these cards during setup, each playerhas one opportunity to look at their facedown cards, choose which ones they wish to keep, and replace the rest (known as a mulligan). Set aside the cards to be replaced and deal a new facedown card into each empty province. Then shuffle the replaced cards back into the dynasty deck.
Note: After this point, players are not permitted to look at facedown cards in their provinces.
Can you look at the new cards you placed on the provinces? This is not clear. “After this point” can be interpreted as “right after you place the cards” or “after you place and get one look at the cards.”