According to the inquiry, the part-time job of jewelry housekeeper has no formal business authority, and many part-time jobs done in the name of jewelry housekeeper are not officially registered in the industrial and commercial bureau, which means that there is no legal business authority and it is not reliable. Jewelry butlers use high interest rates or seemingly attractive profits as bait to attract people to participate in the so-called "jade trading". However, these so-called profits are only fictitious, with the purpose of cheating the participants of their money, which is not safe for the participants.