Both mortals and wizards can and can only sustain life by drinking elixir.

There are many varieties of agar jelly, the most common of which has properties similar to those of oxygen. Plants and animals breathe oxygen, while humans breathe elixir. A certain amount of agar can be extracted from plants and animals, but they cannot be used. Agar jelly only works on humans, and all substances that are not classified as agar jelly entering the human body will trigger a violent rejection reaction.

The secret of the elixir is considered the greatest mystery in the history of science and the most powerful weapon of religious practice.

In fact, after entering the human body, the elixir flows to the fairyland, and in the process, it replenishes the missing parts of the human body. Unless the limit is reached, even if you drink a lot of agar, it will not have any effect on your weight.