Mind Reading Bracelet

Li Boyan has an extremely failed life. At the age of 30, he has achieved nothing, his girlfriend has abandoned him, and the company is preparing to lay off him. Frustrated, he stood silently on the cross-river bridge on a quiet night, and then jumped off. But when he woke up, he was found sitting next to a park unscathed, with none of his belongings missing. However, he was surprised to find that there was a bracelet on his left wrist for no apparent reason. Whose bracelet is it? And who put it on him? What's so wonderful about this bracelet?