The first level of health, that is, physical health: including freedom from hunger and cold, illness and weakness, being able to live and work energetically and meet basic health requirements.
The second level of health, that is, physical and mental health: including meeting basic economic requirements and freedom of daily life.
The third level of health, that is, active health, includes the ability to actively pursue a healthy lifestyle, adjust mental state to adapt to the pressure of society and work, and live a lifestyle that contributes to society.