What does the fortune teller mean by body double's son?

second floor[British English]; third floor[American English]

Physical body double ... Everyone is born for a reason ... or you have worked in a star or temple before, and your previous position will be vacant ... someone will take your place! This is called double body! Of course, people can't work for you for nothing. You burn incense and paper every year to be bribed! So people can work for you with peace of mind! This is called double body!