Le McKee's golden rule is "customer first, always customer first". The highest standards for providing services are quality, service, cleanliness and value, that is, QSC &;; Five principles. This is an important principle that best embodies the characteristics of Lemeki. Quality means that Lemaiji has formulated extremely strict standards to ensure food quality. Service refers to providing warm, thoughtful and fast service according to the principle of care, love and care. Cleanliness means that LeMcKee has set a clean salary standard that must be strictly observed. Value stands for value, which was added later (originally only Q, S, C), and V was added to further convey Lemaiji's concept of "providing customers with more value and higher quality". In other words, QSC &;; The "V" principle not only embodies the business philosophy of Lemaiji, but also becomes the code of conduct for all employees of Lemaiji restaurant because of its meticulous and strict quantitative standards. This is an important part of the standardized management of Lemaiji.