What's so particular about crystal lights in restaurants?

Both white crystal and topaz have the functions of condensing healthy qi and eliminating evil spirits. It is often used to install white crystal, topaz desk lamp or wall lamp in the four corners of the house, which is conducive to home safety and wealth circulation, forming a gas field for home, and contributing to air circulation and wealth circulation. The white crystal itself has the function of converging, concentrating and expanding images. Installing white crystal lights near televisions, computers and microwave ovens can reduce the radiation of electrical appliances to people's bodies and spaces.