How to repair the altar?

Repairing the altar requires at least three embers and at least six obsidians to be synthesized on the workbench.

The specific steps are as follows:

1. You can find the embers at the bottom of hell and dig them with a diamond pick.

2. Back to the main world, biotite can be synthesized by water and magma and collected by using diamond picks.

3. In the furnace, the ash stone ore is burned with coal to make the ash stone ingot.

4. In the workbench, three pieces of ember ingots are placed above the left side of the interface, and six pieces of diabase are placed below to synthesize the repair altar.