Uldir is the Titan's laboratory, and the specific coordinates are in the middle of the Nazmir Swamp on the island of Zandalar.

After the fall of the Dark Empire, the Titans of the Pantheon finally realized the dangers of the void side.

In order to find out the weaknesses of the Old Gods and Void Lords before the next war and come up with countermeasures in advance, the Titans instructed the Guardians to build a secret laboratory in Azeroth, Udir, dedicated to the study of void creatures.

Sharlayan is unclear

The content of this chapter is being updated...