The Missing Ledger
Mei Lin (Protagonist) is pushed into a sharper version of the book's central pressure. Trigger the family rupture and show why the protagonist is the wrong but necessary person to handle it. It should visibly deliver on the promise of "a funeral, property notice, or old family debt drags the protagonist back into a neighborhood they learned to survive by avoiding". It should also strengthen the lane promise behind "immigrant network". Victor Chen (Antagonist/Rival) or the system around them should hit back harder by the end.