The skill book fragments in the Chinese Oscar-Journey mobile game referred to some special skill books obtained in the game, which contained some special skills or skill effects. These skill book fragments could be obtained by defeating monsters, completing missions, activities, and so on. Some skill book fragments could increase a character's skill level and release more powerful skill effects. For example, some skill book fragments could increase a character's attack, defense, health, and other attributes, thus increasing the character's combat ability. Some skill book fragments could also increase the effects of a character's specific skills. For example, they could allow the character to obtain additional effects or skill bonuses when using a specific skill. These skill book fragments were widely used in the game to help the character improve their combat ability and achieve better combat performance. The skill book fragment was a very important resource in the game. It could help players obtain powerful skills and skill effects to improve their competitiveness in the game.