Group cross-over novels referred to novels where the protagonist traveled through many different story worlds and experienced various plots and adventures with other characters. This kind of novel often involved interactions and conflicts between different worlds. The protagonist might need to use his own experience and knowledge to solve problems and gradually integrate into each world. The common plots of group novels included: 1. Travel through different worlds and become different characters to start a new story. In different worlds, the protagonist will encounter various challenges and dangers and need to have various abilities and skills to survive. 3. The protagonist will establish a deep friendship or love relationship with other characters and experience various emotions and adventures. Different worlds may have different cultures, beliefs, and values. The protagonist needs to adapt and make corresponding adjustments. 5. The protagonist can gradually grow into a powerful leader or hero by completing missions and battles to improve his abilities. Group novels had a wide range of audiences because they allowed readers to experience different stories and characters while also enhancing the sense of immersion of the readers.