After leaving, the spare time came to the bookshelf where professional books were stored, found a vacant seat and sat down, continuing yesterday's unfinished task, and began to concentrate on reading.

  With yesterday's accumulation, today's reading of the later content is actually faster, and it was almost finished in no time.

  After finishing reading those science books, I picked up the geography book and started reading it more carefully and seriously in my spare time.

  In fact, geography should be considered a science subject. In reality, the knowledge involved in geography is very broad, not only involving mathematical measurements but also related to astronomy.

  And her more detailed study of geography is also very simple, geography is a highly comprehensive subject, she wants to understand the natural landscape of the earth, geographical structure, mineral distribution and energy development and utilization, must thoroughly study geography.

  In the interstellar era, many technological products' power sources are derived from minerals extracted from other planets and altered through chemical or physical means to be used as energy stones.

  Many of her research products and ideas require powerful energy as support, and the existing thermal power generation or wind power generation on Earth are obviously not enough. Solar energy is a powerful energy source, but it also has more requirements and restrictions, and it's not as convenient as mineral sources like stone. If these mineral sources can be found on Earth, that would be even better.

  Time flies when you're having fun, and before long it was time for lunch. She glanced around and saw that the library was gradually emptying out. She had gotten up a bit late to begin with, so she wasn't very hungry yet. Besides, the cafeteria would probably be crowded at this hour, so she might as well read some more before going to eat.

  Xianyu was just about to continue reading his book when he lowered his head for a moment and was attracted by a drawing on the desk opposite him.

  She sat opposite a grey-haired old man in his sixties, who was now bent over writing and drawing, with an unfinished aircraft engine on the paper.

  She thought that perhaps the timing of her first step into scientific research had finally arrived! This is truly a case of "sleeping on a pillow", coming at just the right time.

  Xianyu quietly got up, took his own paper and pen to the other end of the reading room, a deserted corner, found a position to ponder for a while, and then drew out a very rough and flawed sketch at an extremely fast speed.

  In just over ten minutes, she quietly returned to her original position, and no one on the opposite side noticed anything.

  She returned to her seat and pretended to read for a few more minutes before placing the rough sketch she had drawn on the table, then stood up and left.

  When she stood up, she deliberately pushed the chair back with a loud noise. The old man opposite her finally looked up and glanced at her briefly.

  Qian He had noticed the girl as soon as he arrived, but she seemed oblivious to everything outside her book, exuding a calm and quiet demeanor that softened her strikingly beautiful face. However, this calm demeanor was at odds with the disturbing noise coming from the library at that moment.

  Xianyu also took advantage of the moment when Qianhe raised his head to steal a glance at him. This glance was not bad, and the old man's face looked spirited and elegant, but the work card with the words "Librarian" printed on it made Xianyu somewhat disappointed.

  She thought this old man was either a professor at the school or a researcher looking for materials in the library, but unexpectedly he turned out to be a librarian!

  It's not that she looks down on librarians, every profession is worthy of respect. It's just that thinking about the possibility of getting rich quickly has disappeared, and it's hard to avoid feeling a little disappointed.

  But... are all librarians this fierce? Are their hobbies really drawing high-difficulty aviation engine blueprints?

  I couldn't help but sigh again, a famous school is indeed a famous school, the food is delicious and that's it, the learning atmosphere is still very strong, now even a librarian is a hidden master!

  At this time she had never heard of Sweeping Monk's great name, so after losing hope she rushed to the cafeteria.

  Opportunities are like this, the best is to come, no need to rush, years of scientific research experience have taught me that in all things, it's best not to be impatient, because impatience can't eat hot tofu, especially when doing experiments, one mistake leads to another, and all efforts will be wasted!

  Let's think about what to eat for lunch today.

  The distant leisure did not see Qian He's next surprise.

  Qian He withdrew his gaze just in time to see the drawings that had been casually placed on the desktop, and he was slightly stunned at first, but then couldn't help but get up and pick up the drawings to examine them carefully.

  This is an extremely rough blueprint, so rough that it only roughly outlines one part of the engine and is full of mistakes. But what stunned him was the concept behind this engine!

  The engine she drew is not a traditional one that relies solely on thermal fuel for power, but rather combines solar energy with turbocharged wind power as an auxiliary power source.

  This was something he had never thought of, and perhaps this way of thinking would be a new breakthrough? The more he looked at Qian He, the more he felt that this idea was feasible. When he couldn't help but want to find this girl to ask her about it, exchange ideas with her, she had already disappeared from view.

  He glanced at the books scattered on the table, all of which were high school textbooks. Qian He was taken aback, as he had seen Q Da reading various books before, but this was his first time seeing her read high school basics. Since the books were still there, she must be coming back, so Qian He could only sit down and wait for her return while glancing at the design drafts scattered around.