Chương 191: Very Expensive

Ning Li had already read half of the book that she had borrowed from Lu Huaiyu.

Reading this one was indeed much better than reading the translated version.

When she flipped a page, her eyes suddenly widened.

There was a picture of a nebula on that page.

Since it was an astrophysics book, it was not strange to see such a diagram.

However, what stunned Ning Li were the handwritten numbers below this diagram.

8.17.

It seemed to be a date of some sort.

More importantly, the handwriting seemed to be Lu Huaiyu's, and it looked like it had been written a long time ago.

Since this was his book, it was perfectly normal for him to make notes in it. However, Lu Huaiyu was the type of person who would rarely leave any marks in a book.