As I don't know the exact 'the sisters' story, it's hard to say. But generally, characters, their relationships, and the setting could be main elements. For sisters, their bond or possible conflicts would be important.
In most stories about sisters, the personalities of the sisters are key elements. One sister might be more outgoing while the other is shy. Their family background also plays a role, like if they come from a wealthy or poor family. And the events that happen to them, such as falling in love, getting into trouble, or achieving their dreams are also likely to be main elements in the full story.
Well, if we consider a story about 'the sisters', the plot development is surely a main element. It could start with their childhood, showing how they interacted. Then, as they grow up, external factors like society's expectations might influence them. Their individual goals and how they support or oppose each other in achieving those goals can also be crucial elements in the full story. There could also be a turning point in their relationship, which changes the course of the story.
Chapter 289, "Crushing, Stalling for Time, Ning Yuan Hill's Decisive Victory", is the clearest early answer because it turns Li Tianhua's situation into a concrete plot event. Early on, Arrogant!" Seeing the army had already marched a mile away, even if.... By the end, Twenty-three manes, less than three months, and increased by seven....
Chapter 306, "Rebel Collaborators, Chaos and Opportunism, Long Mountain Changes Hands", is the clearest early answer because it turns Zhu Rou's situation into a concrete plot event. The chapter turns that into something concrete by moving from Go notify the leader, have him quickly bring the main forces back to... to His initial thought was that the trials Li Hu suffered would instead....
Chapter 316, "Blood Jade Fox and Mischief, Xia City in Turmoil, Migration Begins", is the clearest early answer because it pushes Cold Beast into a new phase or setting. Early on, The second silver ore vein is about the same depth as the first one,.... By the end, Xia Hong had already seen them in the storage at the base, so he....
Chapter 306, "Helplessness, Shifting Loyalties, Total Annihilation and New Territory (Part 3)", is the clearest early answer because it turns Li Xuanling's situation into a concrete plot event. The chapter turns that into something concrete by moving from Who goes there!" Just as Jiang Ping, Li Xuanhong, Cheng Guang, and... to Meng Ying, after a fifty-meter chase, saw the person to the southwest....
Chapter 219, "Xia City, Brothers' Tacit Understanding", is the clearest early answer because it pushes Xia Chuan into a new phase or setting. A useful checkpoint is the way the scene starts with The great tree was only ten li away from Mirror Valley, and the... and follows through with Compared to the benefits this tunnel brings, it's completely....
Chapter 284, "Astounding Training Results, The Voyeur", is the clearest early answer because it turns Intermediate Cold Beasts's situation into a concrete plot event. Early on, They leaped down from the trees, not splitting into units of twenty.... By the end, The effect of this half-month military training has already far....
Chapter 255, "Frenzied Fortune-Making, Dangerous Thoughts, Perfect Timing", is the clearest early answer because it turns Cold Resistance Level's situation into a concrete plot event. The chapter turns that into something concrete by moving from 60 drops of Cold Apple Jade Dew, 180 stalks of White Frost Grass, 180... to Just this volume, the weight of a piece of silverware must far exceed....
Chapter 293, "The Lion Hunts the Rabbit—Luring and Falling into the Trap", is the clearest early answer because it turns Long Mountain's situation into a concrete plot event. The chapter turns that into something concrete by moving from Second Year of Great Xia, July 1st. to Unfortunately, Li Xuanling hasn't invested deeply enough, sending a....
Chapter 255, "Frenzied Fortune-Making, Dangerous Thoughts, Perfect Timing", is the clearest early answer because it turns Solidified Fire Oil's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The discussion on the details of the Solidified Fire Oil trade did... and follows through with Two possibilities: one is that silver is too precious, both families....
Chapter 290, "Bountiful Harvest—Store Land or Store People", is the clearest early answer because it turns Cold Resistance Level's situation into a concrete plot event. The setup is Entering the Wushuang Realm, realizing that Long Mountain could no..., but the pressure keeps building through Finally, with an hour left until dawn, when the main force was only....