As Han Li remained silent, Silvermoon asked yet another question, "I never clearly understood why Brother Han wishes to acquire the Brightsight Water even though it has no effect on cultivators beyond Foundation Establishment stage."
When Han Li heard this, he faintly smirked and said, "The Hidden Sword Mountain cultivators were mistaken. It isn't that the Brightsight Water has no effect on high grade cultivators. It's that high grade cultivators have already cleansed their body's essence upon forming their core. Their eyes can already see through simple illusion techniques and dense fog, so there isn't much to be gained from cleansing them such a small amount. Since the amount of spirit water wouldn't be enough to be effective for a high grade cultivator, it's better for a low grade cultivator to use it."
Silvermoon yelped in surprise, "Yi! How does Brother Han know about this?"