I am remaking the Chunk Reset Notice that Link made.
Chunks reset around all the spawn zones throughout the game.
When you first spawn, you should walk away from spawn for at least 5-10 minutes, or go 6 Chunks away from spawn. (Each chunk is one coordinate point on the Coordinate Map on the top of your screen. Anything built within 6 chunks from spawn will be deleted, but if you want a undisturbed base walk or teleport around 600-5000 chunks away from spawn.