I don't know how the author does it but the pacing in chapters 34-40 is absolutely perfect. Let me break it down:
Chapter 34 opens with the birthday banquet - political maneuvering, the engagement swap, the Emperor's decree. That's a huge plot beat right out of the gate. Then Yan Wuxin and her father leave, and immediately we get the Xuanyuan Mei interlude where he fights off the eunuch spy. Bam, new character introduced with maximum impact.
Then Chapter 35 starts with "flies behind" - we learn about the assassination attempt, Yan Wuxin's ice powers, her poison pills, and then BOOM, Xuanyuan Mei appears in person. The chapter ends with him telling her about the trial and the Wannian Shilian.
Chapter 36 has the return to Yan Jia, the family confrontation, and ends on "let's go back" from her father. The word choice matters - not "go home" but "go back." That single detail hit me so hard.
The chapter transitions are smooth, the cliffhangers are well-placed, and there's zero filler. Every scene advances either the plot, character development, or worldbuilding. I read this in one sitting and I have no regrets. The author knows exactly when to speed up and when to slow down for emotional beats.