Protagonist Leech System

Shi Long was an unlucky transmigrator from Earth who not only transmigrates into a trashy body with the same name but also lack a cheat item or system that was normally present to someone like him.
Nine years after transmigrating, the sect he joined was attacked by an unknown group and seemingly the same group as the one responsible for the destruction of the once prosperous and righteous Harmony Lake Palace, leading to his death.

Surprisingly, he was given another chance at life when he woke up in the same trashy body five years before the night the unknown attackers raided his sect but with a new lease on life.
[Ding!]
[Host Shi Long has attained the prerequisite for Protagonist Leech System: Dying without reaching the 5th Stage of Spirit Gathering Realm]
[Protagonist Leech System has been bestowed to host please use it well.]
[Protagonist Leech System aims for host to become the greatest leech *cough* shield for destined protagonist of the world!]
[By leeching off a protagonist's heaven-defying luck, grow and become their greatest backer who could save them in dangerous situations! (To leech off more of their luck)]