As Bi Bi spoke, her eyes rapidly swept the surroundings. Spotting blank papyrus and an ink-dipped Goose Feather Quill nearby, she quickly grabbed them and began scribbling down a string of numbers, letters, and mathematical symbols.
"Yes, yes, yes, these should be switched left and right here, then eliminate them simultaneously, and then..." Bi Bi spoke as she wrote. Just as she was getting into it, her expression suddenly stiffened. She looked at what she had written in surprise, scratched her head, and said, "Hey, I clearly felt like I already knew how to solve this problem, but... why did I suddenly forget?"
Richard: "..."
"Scratch, scratch, scratch..."
Richard took out a scroll and quickly wrote several lines, recording Bi Bi's condition. Then he looked at Bi Bi, considered for a moment, and explained, "The knowledge imparted to you should still be in an unstable phase. You can't apply it flexibly yet; you need time to digest it. Only after you finish digesting it will you truly be able to use it proficiently, instead of having it work sometimes and fail other times."
"How long until I finish digesting it?" Bi Bi quickly asked.
"Hmm... well... there isn't enough data to give you an exact time. But you yourself can serve as data for those who come later," Richard said. After a pause, he added, "I can give you a rough estimate. Based on my guess, you may need anywhere from three days to two weeks to digest this knowledge. If you practice the relevant knowledge during that time, such as doing more math problems, it might speed things up."
"Is that so?" Bi Bi nodded thoughtfully. The next moment, she darted out like a rabbit, her voice drifting in from outside the door. "Then I'm going to find Pandora