Yes, it is. The Batman prequel novel often delves deeper into the backstory of Batman, his origin, and the development of Gotham City. It can provide a more in - depth understanding of the character and his world, which is great for Batman fans.
The status of the Batman prequel novel as canon is unclear. It could be if it complies with the core lore and is sanctioned by the relevant authorities. But if it contradicts or strays too far from the established Batman narrative, it's likely not canon.
Batman himself is surely one of the main characters. Alfred, his loyal butler, is likely to be there as well, as he has been important in Bruce Wayne's life.
The key features might include exploring the backstory of Batman. It could show how he developed his skills and his early encounters with villains. Maybe it also delves into the setting of Gotham before he became fully established as the Dark Knight.
Qing Yuannian's password was Wu Zhu's name. In the movie, Fan Xian opened the box his mother had left for him and found a combination lock on it. After inserting the key and entering the password, Fan Xian successfully opened the box. There was a letter inside. Fan Xian needed to use the five-stroke input method to enter Wu Zhu's name to unlock the password.
The prequel trilogy refers to the film series directed by Chris topher Nolan, including The Dark Knight (1989), The Dark Knight Rises (1992), and The Dark Knight Rises (1992). The film series was considered a classic superhero film and received widespread praise and box office success worldwide.
Expect a deeper exploration of Gotham City. The prequel novel will likely show you the seedy underbelly of the city, how the crime and corruption were brewing before Batman came onto the scene. It may also introduce some of the key figures in Gotham that influenced Batman's journey, like the police officers or the early versions of his allies. You'll get a sense of the atmosphere and the challenges that Batman had to face from the very beginning.