Well, there are several places to find 'arithmancy hp fanfic'. Fanfiction.net is a classic site. Just type in 'arithmancy' and 'Harry Potter' in the search bar and browse through the results. AO3 is also great. It allows for more detailed tagging, which helps in finding fanfics that focus on arithmancy within the Harry Potter universe. Additionally, some smaller Harry Potter fanfic communities on social media platforms might also have writers sharing their arithmancy - based fanfics, but it might take more digging to find them.
You can try looking on fanfiction.net. It has a large collection of Harry Potter fanfics, and you might be able to find some specifically related to arithmancy by using the search function. Another option is Archive of Our Own (AO3). It has a well - organized tagging system, so you can search for 'arithmancy' and 'Harry Potter' tags to find relevant fanfics.
Chapter 501, "This Night, Destined to be Turbulent", is the clearest early answer because it turns Dragon Ridge Island's situation into a concrete plot event. The chapter turns that into something concrete by moving from After settling in, Jiang Mingyu aimlessly strolled the streets.
Chapter 431, "Su Yinwan Is Here Too?!", is the clearest early answer because it turns Wilderness Survival's situation into a concrete plot event. The chapter gives readers a real answer by opening on [Holy shit, why is Su Yinwan on this show too???] [!!!
Chapter 690, "Miss Jiang, Marry Me!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. The chapter gives readers a real answer by opening on No wonder she had predicted she would come into some unexpected...
Chapter 663, "How Did These Two Start Fighting?!", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with Jiang Shixu received the message in daylight the next day.
Chapter 459, "Even Got Educated by a Variety Show", is the clearest early answer because it turns Zhuola's situation into a concrete plot event. The chapter gives readers a real answer by opening on Su Yinwan felt somewhat annoyed but could only suppress the emotion...
Chapter 328, "Persuading the Old Master", is the clearest early answer because it turns Qiao Shuang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Jiang Li's authoritative words stunned the old man.
Chapter 426, "How Did Someone Fall Down?!", is the clearest early answer because it turns Do's situation into a concrete plot event. The chapter gives readers a real answer by opening on Isn't this a bit too risky..." Liu Qian, standing out of the camera's...
Chapter 615, "River·Doraemon·Li", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Everyone huddled close with their bowls in hand.
Chapter 590, "Are You Angry?", is the clearest early answer because it turns Buddha Beads's situation into a concrete plot event.
Chapter 580, "Old Sir Gu: I command you to start a live stream!", is the clearest early answer because it turns Guo Xing's situation into a concrete plot event. The chapter turns that into something concrete by moving from After seeing those comments, Ai Xiaochun was overjoyed.