Incredible maze lamp oil gets raiders. Where is the lamp oil?

After the desert oasis checkpoint, three boxes of holy lamp oil appear randomly on the BOSS floor after 60 floors, and each box can be opened to get a provincial oil lamp.

Because when wishing on the desert altar, four holy oils are needed, many adventurers don't know how to get the fourth holy oil.

In fact, there is no fourth kind of lamp oil, but upgrading lamps can reduce the consumption of lamp oil.

In the maze ahead, upgrade the magic lamp when wishing for gold lamp oil, and the magic lamp will get the attribute of "lamp oil consumption-1". After equipping Aladdin's magic lamp, you can consume three magic lamp oils to make a wish.