曾百毒不侵如今却无药可医
[céng băi dú bù qīn rú jīn què wú yào kĕ yī]
Once Immune to Poison But Now Incurable describes the psychological change where once the person might feel strong and invulnerable against adversities but gradually become deeply hurt and fragile, facing issues that are harder to resolve, representing inner vulnerability and need for healing.