A system is a system, and it is the connection between things. Just like various systems of human body, respiratory system and organs must be related, and skin tissue and muscle system are also related. Mechanism is the environment, the system and the train of thought of system operation. I hope my answer is helpful to you. Pay attention to Chengdu Shang Wei Qidian Enterprise Management Consulting Co., Ltd., a professional organization for internal training, outward bound training and public relations planning.