Beauty Technology: Be proficient in various beauty techniques, such as facial care, personal care, makeup, fat freezing, health care, skin care, fitness supplements, teeth whitening, body sculpting, hair removal, microneedling, etc., and understand their characteristics, types and skin colors of different skins , and can provide professional beauty services according to customer needs.Product knowledge: Understand the characteristics, efficacy, and usage of various beauty products, and be able to recommend appropriate products based on customer needs and skin type