To figure it out, think about whether the story could happen in real life. If it's highly unlikely or impossible, it's likely fiction. Also, check if there are references or citations; non-fiction often backs up claims with evidence. Fiction, on the other hand, is all about creating a fictional world for the reader to enjoy.
One way to tell is by looking at the content. If it's based on real events, people, or facts, it's likely non-fiction. But if it involves made-up characters, settings, and events, it's probably fiction.
Chapter 159, "Blood and Flesh Wall, The Leader Hasn't Broken Through Yet?", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Lin Wan, Shi Lu, gather all the children in the main hall on the... to Luo Yuan, Yuan Cheng, Zhao Long, and the Earth-digging Realm who....
Chapter 80, "Outsmarting the Frost Wolf Pack", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. Early on, How did we end up encountering a pack of Bone Spur Frost Wolves?. By the end, Seizing the opportunity, Xia Hong abruptly released his right hand,....
Chapter 134, "Difficult Hunt [Warm Sun Tycoon Extra 3/10]", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from Long defense will inevitably lead to loss, especially when mobility... to The rest of the team stepped back a few steps, leaving Xia Chuan....
Chapter 153, "The Terrible Color of the Dense Forest, The Shadow of Mirror Immortal Gu", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is Possessing over ten thousand population, and hundreds in the..., but the pressure keeps building through Facing a mere medium-sized camp with a population over a thousand,....
Chapter 135, "The Fearless Mirror Immortal [Three in One]", is the clearest early answer because it turns Iron Arrows's situation into a concrete plot event. The setup is Snow Mane could pretend to be dead, and pretend it did well., but the pressure keeps building through But the fact that it could shoot out those hundreds of quills on its....
Chapter 502, "A Nap In Disaster", is the clearest early answer because it turns Garrick's situation into a concrete plot event. The chapter gives readers a real answer by opening on The world snapped back into place with a violent lurch. and ending on ~~~~~ Night in the Forest of Twin Disasters was not like night.... In story terms, the chapter closes with And it was already closing., which gives A Nap In Disaster a stronger narrative position and pushes the relationship tension onward.
Chapter 90, "【Seeking First Subscription】Chapter 90 Wooden Mannequin", is the clearest early answer because it turns Cold Beast Meat's situation into a concrete plot event. Early on, This..." "Three Cold Beasts hunted in one night?" "How is this.... By the end, Let alone ordinary people, even those in the Logging Realm reacted....
Chapter 144, "Self-serving at the Expense of Others, He Meng's Furious Rage [Sorry for Being Late]", is the clearest early answer because it turns Zhao Long's situation into a concrete plot event. The chapter turns that into something concrete by moving from The long-prepared Zhao Long and the others initially thought they... to Just the iron arrows being knocked off flew and directly penetrated....
Chapter 80, "Outsmarting the Frost Wolf Pack", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with How did we end up encountering a pack of Bone Spur Frost Wolves? and follows through with Xia Hong and Luo Ming turned their heads, their faces instantly....
Chapter 507, "Good Work", is the clearest early answer because it turns Fenrir's situation into a concrete plot event. The chapter gives readers a real answer by opening on The forest did not frighten him nor did the darkness unsettle him. and ending on He crashed into them like an avalanche, body wreathed in frost-white....