Sinful Blood Sinks

The protagonist, Lu Chen, has a tolerant and tenacious character and an above-average IQ. Its destiny is the "edgeless black sword" that is regarded as useless by the world, but in fact it contains the ancient "spirit-swallowing" characteristic. He does not need to hunt wild beasts, but can devour other people's discarded or damaged spiritual hubs, purify and fuse exclusive skills that transcend conventional years, and embark on a dark evolutionary path that cannot be copied.