I think Ulysses is a great choice. It offers a clean and distraction-free interface that helps you focus on your writing.
Well, Scrivener is a popular option. It has powerful organizational features that can be handy when working on a long story. It allows you to break your story into sections and easily reorder them.
You might want to try Evernote. It's simple to use and syncs across devices. You can jot down your ideas anytime and access them wherever you are to build your long story gradually.
Chapter 153, "The Terrifying Hue of the Dense Forest, The Shadow of Mirror Immortal Gu", is the clearest early answer because it turns Yuwen Hu's situation into a concrete plot event. The chapter gives readers a real answer by opening on Xia Hong's murderous intent was intense, not holding back in the... and ending on As if confirming something, his face was instantly filled with....
Chapter 158, "Preparation, Arrival", is the clearest early answer because it turns Shi Ping's situation into a concrete plot event. The chapter gives readers a real answer by opening on Ever since the day before yesterday, they have been staying in the... and ending on On the second floor, inside the Blacksmith Room, the sound of forging....
Chapter 201, "Five Yuan Garrison, Cold Marrow Iron", 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 Lin Kai raised an eyebrow, immediately turning back to look at Xu... and follows through with Xu An then led Xiang Liang, finally leaving the hall..
Chapter 187, "Lu Sheng, Unauthorized Mining, Humiliation", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. The chapter gives readers a real answer by opening on Everyone collected around four to five hundred pounds each, they must... and ending on If they brought people over before Xia Chuan, relying only on these....
Chapter 207, "Improving Corvée Labor and Changes in Year 1 [Happy New Year!!!]", is the clearest early answer because it turns Yuan Cheng's situation into a concrete plot event. It opens with This undoubtedly also indirectly reflects the current abundance of... and closes on Have we accomplished so much in a year?" "I hadn't even noticed there....
Chapter 246, "White Dew Gu and Cold Apple Jade Dew, Hanqiong's Sinister Smile", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is Xia Hong, upon seeing the white mist, was taken aback., but the pressure keeps building through why does the smoke feel so familiar?" After pondering for a moment,....
Chapter 164, "The World in the Mirror, Immortal", is the clearest early answer because it turns Leader's situation into a concrete plot event. The chapter gives readers a real answer by opening on Below the bamboo building, the crowd was bustling, with faint noises... and ending on He could tell from their tone that they were genuinely willing to do....
Chapter 224, "Cold Resistance Level Classification, Gains and Persuasion", is the clearest early answer because Hou Hu finally turns buildup into a real advancement. It opens with After finishing his speech, Xia Hong appropriately showed a sense of... and closes on My camp's method of boiling Jade Bone is somewhat outdated, so I.... The key payoff is that it turns Hou Hu's growth into a concrete upgrade step and sets up the next payoff in the power growth storyline linked to Xia Hong.
Chapter 170, "Camp Integration, Territory Rapid Expansion (Part 3)", is the clearest early answer because it turns Cold Beast Meat's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Having finished discussing the first point, Xia Chuan began to talk... and follows through with Seeing the expressions of everyone, Xia Hong slightly raised his....