Spoiler
Spoiler!
Taeui finds out his uncle used him as a bait to lure out his brother cause they needs Jaeui the genius weapon developer and researcher for more weapon.and uncle thought if taeeui is in danger jaeui will come back to save him.
Spoiler
And what did Ilay have to do with this i honestly just barely skimmed this chapter and i don't remember what happened in the novel