Quite perceptive!
Master Xuanji's expression remained unchanged, but his heart secretly rejoiced. He had discovered two promising seedlings through the "Observation Candle Technique": Bai Qilang, who exhibited an outstanding nine-inch purple glow, and his younger brother Bai Ming, who was slightly less impressive with a glow of about seven inches.
Generally, a white glow of over three inches is considered to have crossed the minimum threshold for cultivation.
With enough diligence and effort, completing the process of eating elixir and avoiding grain, reaching the First Realm Perfection would not be an issue.
If one exhibited a green glow exceeding six inches, it signified mid to high aptitude, capable of achieving introductory meditation visualization in a hundred days, with the hope of nurturing and solidifying the divine soul.
