Lin Lan suddenly sighed and said:
"Junior Brother Zhang has raised a thorny issue, and it is bad news for the sect.
Before both Spirit Veins have been fully raised to the fourth grade, we only need to prioritize raising the Yang Vein's grade, then indirectly raise the Yin Vein through Yin-Yang conversion.
The benefit is that it saves a great deal of resources, allowing some fellow disciples to enjoy the benefits brought by high-grade Spirit Veins ahead of time.
Now, we can no longer benefit from this method. We can only raise both Spirit Veins simultaneously, and from now on, the gap between their grades should ideally not exceed three years.
Junior Brother Zhang said that he had previously overlooked Cloud Yang Valley's circumstances. If there is a gap between the Spirit Veins' grades, it will create an imbalance between Yin and Yang.
If the Yang Vein is raised first, Yang qi will shift northward, and those Yin Element Spirit Plants planted near the Yin-Yang boundary will suffer.
The Yin-Yang boundary is the most fertile land in the surrounding area. It cannot possibly be left empty.
There is also another crucial point: the mountain-protecting grand formation requires a Yin-Yang balance between the Spirit Veins as well. Only then can it fulfill its proper functions.
If one force becomes too strong and causes an imbalance between Yin and Yang, the formation's operation will be affected. In the event of fierce battle, it could bring unpredictable and severe consequences.
Therefore, if we wish to raise the Spirit Veins' grades through the formation again, we cannot do things as we did before."
Her tone was somewhat dejected, as though the cost felt rather heavy.
Ji An rested his hand on the table and lightly tapped his fingers twice before comforting her.
"You