It was outsourced to Netease, they already make comparable games. I'd bet they mostly just got some Blizzard assets and maybe some high level signoff on things to ensure they are ok.
Chinese developers aren't incompetent, they just have a hard time marketing their games to a western audience. Slapping a western brand name on one of their games is a perfectly reasonable way for them to do that.
Sorry, I wasn't implying they were incompetent. But they got Blizzard sign off on this. Otherwise they would just have another sleazy pay to win game. Now they have a sleazy game wrapped in Diablo assets.
Chinese developers aren't incompetent, they just have a hard time marketing their games to a western audience. Slapping a western brand name on one of their games is a perfectly reasonable way for them to do that.