From a personal perspective, it’s useless. From the perspective of the enterprise, the employee ID is the key to ensuring the independence of all data. For individuals, adding a symbol is irrelevant. With this symbol, it is perfect for both personal and corporate use. Without this symbol, your drawing number 1 will have the same name as someone else’s drawing number 1, and the data will lose its uniqueness. The work number is not important, and its length is not important as long as it is independent