Baldur's Gate 3 is a game played by many netizens, and a lot of questions have arisen while playing. For example, I don't know much about how to use the key on Bernard in Baldur's Gate 3, so where can I find information about it? What about the analysis of this content? You might as well take a look at the guide content brought by the editor below, I hope it will be helpful to everyone.
In the game, the key on Nader is the ancient key, which is mainly used to open the door of the Mathematical Tower.
You can still use the ancient key to open the Olympiad Tower and enter the underground floor.
Then you can get this key only after defeating 5 robots.
You can get a certain amount of equipment by entering the underground level. Just talk to the robot.