Think about what new elements you want to add. It could be a new character, a new location, or a new conflict. For example, you could introduce a mysterious crystal that has special powers and that changes the whole dynamic of the story.
First, you need to be really familiar with the source material of 'Crystalline'. Know the characters, the setting, and the overall plot. This will give you a base to start from.
Start with an outline. Outline the main plot points, the character arcs, and how you want the story to end. Then start writing, don't worry too much about making it perfect at first. Just get your ideas down on paper (or screen). And as you write, keep referring back to your outline to make sure you stay on track.
If you want the clearest chapter reference, go to Chapter 72. Early on, Jiang Yan was still griping when suddenly a fair hand reached out beside...; later, the chapter leans on I'll take these, thank you." In an instant, five pairs of eyes stared over....
A practical answer is Chapter 68, because it turns the idea into a concrete scene. The chapter opens with Jiang Li carried the noodles straight out of the kitchen and came to the..., adds pressure through Could it be those two didn't find a place to stay last night and slept..., and ends on But.
The best chapter pointer here is Chapter 60, "The Human Oil King". It opens with What's with Jiang Yan, treating his own sister Jiang Li like this?" "He... and closes on And in traditional characters?" "What else?.
Chapter 90 is the strongest chapter-level answer because it starts from Watching He Yun gradually take control of a tractor under professional... and follows through on Jiang Li finally let go of Jiang Yan's arm..
If you want the clearest chapter reference, go to Chapter 93. Early on, Jiang Li looked back and saw several aunties linking arms, walking up the...; later, the chapter leans on The leader was indeed the aunt to whom she had read fortunes this morning..
If you want the clearest chapter reference, go to Chapter 63. Early on, During those seven days, he thought he had completely escaped from that...; later, the chapter leans on But now it seemed he hadn't..
If you want the clearest chapter reference, go to Chapter 74. Early on, Having seen Jiang Li's ID before, he knew that this person named Shiguang...; later, the chapter leans on And he only knew the answer to that one question..
Look to Chapter 57 for the clearest answer. It begins with Lu Xingchao's numerous fans were stunned., keeps building through Holy shit, what's up with God L?, and lands on I'm saying, big bro, can you at least reply to me?.
A practical answer is Chapter 88, because it turns the idea into a concrete scene. The chapter opens with She wanted to refuse, but didn't have the courage to do so., adds pressure through Jiang Yan immediately stepped forward, "I have one point, quick, quick,..., and ends on Let's go," Jiang Li.
Chapter 72 is the strongest chapter-level answer because it starts from Jiang Yan was still griping when suddenly a fair hand reached out beside... and follows through on Think about it." Jiang Yan fell silent..