It could be that Albus Severus Potter travels back in time within the fanfic's plot. By changing certain events in the past, he indirectly saves Harry's life. He might prevent a dangerous encounter that Harry was supposed to have, thus altering the course of events in a way that Harry's life is no longer in danger.
Maybe he uses some powerful magic spell he learned at Hogwarts. For example, a protective charm that shields Harry from a deadly curse.
In the fanfic, Albus Severus Potter might discover a hidden prophecy about Harry's life being in danger. Using his wits and the knowledge he has of the wizarding world, he figures out a way to counter the threat. He could gather allies, like some of his friends from Hogwarts or other powerful wizards, and together they come up with a plan to save Harry. He might also use some unique magical artifacts or potions that are only available in the fanfic's fictional world to rescue Harry from the brink of death.
The best chapter pointer here is Chapter 65, "Jiang Li Missing?!". It opens with Several minutes later, the room remained silent. and closes on What's the deal with these two?.
The best chapter pointer here is Chapter 63, "Far Exceeded Expectations!". It opens with During those seven days, he thought he had completely escaped from that... and closes on It was already past midnight, but the conference room at Xingmei....
If you want the clearest chapter reference, go to Chapter 14. Early on, Lin Manru had a rare good night's sleep.; later, the chapter leans on After freshening up, she specifically went to Jiang Yan's room on the....
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.
Chapter 68 is the strongest chapter-level answer because it starts from Jiang Li carried the noodles straight out of the kitchen and came to the... and follows through on But didn't Uncle Zhao say he was still sick?.
The best chapter pointer here is Chapter 35, "Stunning Beauty Shocks the Prosperous Age, Tops the Trending Searches!!!". It opens with Shining Transformation Trip's filming location was set on the distant... and closes on Brother is really hardworking, actually arriving at the same time as the....
Look to Chapter 18 for the clearest answer. It begins with In the corner, a girl in a black dress sat quietly, holding a glass of..., keeps building through Her serene yet cold temperament, along with her exquisitely beautiful..., and lands on Hurry home, what is a young lady like you doing.
A practical answer is Chapter 29, because it turns the idea into a concrete scene. The chapter opens with Big brother, it's me..." The shadow suddenly spoke and it was Jiang..., adds pressure through Learning from experience, Jiang Yan chose to stand next to Lin Manru this..., and ends on Big.
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.