Pei Yuan told her a lot, including some directions of the Wood Power that she had never even considered before, which she could now try, as the development directions for high-level Wood Power users are quite broad.
There is no strongest or weakest among the Five Elements Superpowers, all the elements complement each other. Once you reach a high level, the difference lies in how thoroughly you have researched and how strong your abilities are, not in the inherent strength of your superpower.
It's not correct to say that Water and Wood Elements are very weak, while Fire and Gold are very strong, and the rest are not worth considering.
For instance, Li Pan could now try Wood Power purification, to purify plants that are mutating abnormally, which could lead to surprises.
Purification means to remove the violent factors from plants that are mutating abnormally and to straighten out their Wood Element Factors, turning them positive.