Lu Li was slightly displeased, but he had to accept the truth.
The Thief Skill Books were grey and the colour had faded because of their age. The average person could not tell the differences between each book and would randomly select them most of the time.
However, Lu Li had experiences from his past life, so he was not the average person.
Skill Books had names on them, but they were flipped so that the player had to randomly select one. Despite this, Lu Li could tell the difference between the books due to the patterns on their backs.
Every book had a different pattern, but it was very hard to tell them apart. Someone accidentally noticed this one year into the game and a group of people studied the patterns for weeks, collected data and found them.
Lu Li obviously didn’t memorize the patterns of every skill book. However, he did take the time to memorize the patterns of the rarer and more expensive skill books.
