Underground Castle 3 Laboratory Visit Method in Qiming Town 1. First, players need to go to the library to challenge Robert's lab. After customs clearance, they can go to Robert's collection and exchange keys for props and villas.

2. After getting the key, go to the lakeside villa, find the secret passage, and use the key to the abandoned laboratory.

3. There are two copy exchange entrances in Qiming Town. There is no strict exchange order. One exchange place is to exchange laboratory keys in Isaac's laboratory in the old city, and the other is to exchange villa keys in the quiet library. After buying, you can look for white spots on the map and trigger 300 jade.

The above is about the strategy of laboratory access in Qiming Town. I hope the above content will help players.