Lear’s Secret Tomb and the Shooting Star Ending
Off the main route, Lear’s Secret Tomb sits behind three challenge rooms and Spirit Keeper: Cixing. Clearing it yields the Rhizomatic Bomb — a key item for the Shooting Star Ending, a separate thread from the Azure Bow’s upgrade path (the bow’s final arrow, Rhizomatic Arrow, is a True Ending item handed over by Kuafu and cannot be selected like the other three).
The two endings
At the Root Pinnacle, Yi reaches one of two endings. The critical path leads there regardless; the Shooting Star variant is what the Rhizomatic Bomb from the tomb enables.
Soul reclaim (Soul Reaper Jade)
If you die to an enemy, your soul is absorbed and orbits that enemy until you beat it. The Soul Reaper Jade changes this: a Talisman explosion reclaims your soul directly, so you do not have to kill the enemy that killed you.
Transmute bonuses
Transmutes modify Talisman kills (one active at a time, bought from Kuafu):
- Unto Life — restore 15 HP.
- Unto Wealth — gain 10 Jin.
- Unto Qi — gain 1 Qi charge.
Where to look for more
Secrets in Nine Sols tend to sit behind Anomalous Root Node gating — a move you unlock later opens a path you walked past earlier. After each ability unlock, backtrack: the exploration guide covers which node unlocks which move, and the boss database lists optional fights (Kanghui in the Prison, Yingzhao in the Radiant Pagoda, Xingtian in the Boundless Repository) that carry their own loot.