High School Why does Lithium fission produce energy?

[Jackissimus]

Hi, a simple question from an amateur: Why does Lithium fission produce energy instead of consuming it? (https://www.world-nuclear.org/information-library/current-and-future-generation/lithium.aspx)
I always thought that fission of heavy elements produces energy, and fusion of light elements also produces energy, and the opposites of those reactions consume energy. Isn't that so?

 

[Vanadium 50]

Please write down the equation for the exact reaction you are talking about, and also the binding energy for each participant.