IINM, it's part of the game are outsourced to local game developer, it's not 100% fully developed in-house by Naughty Dog themselves

likewise for almost all of the games (indies excepted), it's a cooperation efforts from multiple 3rd parties, games nowadays has become too big and too complicated to be completed by one studio alone. If you look at the end game credits, you'll see multiple studios are involved, and you can actually sees a lot of Asian name in it as well