I accidentally became invincible while studying with my sister

Zhong Yuan watched helplessly as his sister, Zhong Lan, died in front of him, but he was powerless. After a rebirth, Zhong Yuan vowed to protect his sister. Returning to life, Zhong Yuan discovered that he had gained the ability to successfully absorb 100% of the Resonance Crystals from creatures. Inadvertently, he became invincible!