For example, the ancient ruins space that Zhou Tian entered when he was a mid-level monster. However, spaces like these often have restrictions for entry like only being accessible at certain times. Even if one knows the location of the ancient ruins space, they may not be able to enter it at will.
It's not advisable for Zhou Tian to return to Bear Cub's old home, for two reasons. Firstly, Zhou Tian had already benefited significantly from the previous expedition and it was unlikely that he would gain as much by going again. Secondly, the place was discovered by the Blood Moon forces. Zhou Tian had already owed them a favor by intruding once to enhance his power. Zhou Tian couldn't afford to shamelessly raid the place repeatedly.
Therefore, after much consideration, Zhou Tian eventually chose an ancient ruins space that was relatively high-risk but potentially rewarding.
