The Painted Folding Screen is a piece of Decors from the Lunar New Year set in Cookie Run Kingdom. This was one of the objectives of the lunar new year event to get lucky pouches, which were redeemable for rewards.
See also: All Buildings
You'll find this decors in the lunar new year tab of the decors tab. It costs 1,920 coins and gives 30 decor points.
You can find it in this tab of the decors shop:
Then it's on the top row, after you scroll to the right a little ways.