The supervisor book of Sword Net High School No. 3 was a game item that could be obtained by copying books. To be specific, players needed to head to a certain dungeon in the game and defeat the monsters in the dungeon to obtain the books dropped by the dungeon. Then, the players had to submit these books to the bookstore in the game for sale to obtain a copy. The type of book to copy depended on the player's preferences and skill level. Generally speaking, players could choose to copy some books that improved their combat skills, such as the "Sword Network Three Strategy Guide","Combat Skills Crash Course", etc. In addition, players could also choose to copy some books that increased the level and attributes of equipment, such as Equipment Strengthening Secret Manual, Gem Embedding Guide, etc. It was important to note that there was a certain risk in copying books. Players had to pay attention to the copyright regulations in the game to avoid violating the intellectual property rights of others.