One possible reason could be for speed. The Firebolt is known for its incredible speed in the Harry Potter series, and Harry might need it for faster travel between Hogwarts and other places, or for Quidditch matches to outrun his opponents more easily.
Harry is the main one, but other characters could be involved in different ways. Neville could accidentally stumble upon Harry's secret project and, in his clumsy but kind - hearted way, end up helping. Luna Lovegood might offer some out - of - the - box ideas with her unique perspective on magic. And Dumbledore, with his vast knowledge and wisdom, could be a guiding figure in the background, giving Harry some cryptic advice that helps him in the creation of the Firebolt.
Maybe he loves the idea of the Firebolt in the fanfiction. It could be that the stories expand on his experiences with the Firebolt in a really exciting way.
Well, it could be about Harry using his skills and magic knowledge to custom - create a super - powered Firebolt. Maybe he adds some unique enchantments to it for speed or stealth.
There's a fanfic where Voldemort curses the Firebolt, and Harry has to remake it using ancient magic and rare materials. The process is full of challenges and discoveries.
Maybe it's a story where a powerful curse affects the Firebolt, and Harry has to find a way to remake it to regain his edge in Quidditch and face other magical challenges. The focus could be on his determination and ingenuity.
The fanfiction might include some amazing races or battles on the Firebolt that Harry is really into. It could also show the Firebolt in a different time or place, like in a magical tournament in a far - off land. Plus, the fanfiction could give more backstory to the Firebolt, such as who made it and why it's so special. All these elements combined could be what makes it so appealing to Harry.
The school belle's personal expert, Tianjie Island, was a setting in the novel, The School Belle's Personal Expert, written by the author, I Eat Tomatoes. In the novel, the process of Xu Lingchong obtaining the Chrysanthemum Encyclopedia happened on Tianjie Island. The Heaven-grade Island was an important place for cultivation. There were many powerful cultivators on the island. The one who gave Xu Lingchong the Chrysanthemum Manual was a cultivator named Lin Qingyang. Lin Qingyang was a powerhouse on the Heaven-grade Island. He had a unique chrysanthemum cultivation method and had already cultivated to a powerful level.
In the original series, the Firebolt was a gift to Harry, not something he bought. So the fanfiction is a major deviation from the canon in this regard.