This is a lighthearted, snarky comedy that deconstructs the "old master in a ring" trope.
The protagonist was an overworked corporate drone in his previous life, crushed by a 996 work schedule. After dying from overwork, he transmigrates into the spirit of an ancient-looking ring. He thought death would be the ultimate escape, only to find himself jumping from one pit of fire into another. Due to a space-time bug, his ring has become a signal hub for a "shared old master."
Within a hundred li, anyone who fits the classic web-novel protagonist templates of "good-for-nothing with a broken engagement," "family wiped out," or "cauldron destroyed, pill ruined" will automatically connect to him when they hit rock bottom or face a life-or-death crisis, treating him as their own personal, omnipotent old master who accompanies them everywhere.
The protagonist is a modern man with an extremely active inner monologue. He's good at snarking and a bit of a coward by nature, so this sudden "customer service" job leaves him utterly distraught. Every time he fumbles through some guidance full of holes, System bugs and his Hosts' powerful imaginations make them misunderstand it as an unfathomably brilliant lesson in the mysterious workings of the Dao, simple yet profound.
And so, the most "unreliable" old master in history and a group of the most "imaginative" chosen ones in history embark on a journey full of misunderstandings.
As a newbie, it's really good. As long as it's not bad and not too short, it can really be considered a good and interesting book.