1, stall purchase: In the book classification of stall, players can find books sold by others, but the price may be higher, or they can choose to shout in the world chat channel and let others sell books to you.
2, treasure map: players can use the treasure map to mine treasures, and have a certain chance to get books.
3. Copy drop: In some copies, there is a certain chance to drop books by defeating specific monsters.
4. Activity reward: Various activities will be launched irregularly in the game, and players can get rich rewards, including books.