Lu was a common surname that could play an important role in novels. Here are some possible scenarios: The protagonist is a person with the surname Lu. His life experience and interpersonal relationships can provide background and clues for the story. 2. The protagonist has many ways. Sometimes, he will encounter some challenges and difficulties. These challenges and difficulties can stimulate the protagonist's potential and fighting spirit. 3. The protagonist's approach is quite special. He or she has some unique ideas and opinions, which can affect the development and ending of the whole story. 4. The protagonist's path involves some complex social relationships such as family, sect, government, etc. These relationships can trigger a series of conflicts and struggles. The protagonist's path could also involve some aspects of culture, history, geography, etc., such as exploring the inner world of human beings across different cultures, histories, and geographical differences. The above are just some possible plots. Of course, you can also freely create a unique novel world according to the storyline and character settings.