Laona means older. Age Chinese vocabulary refers to the length of a person's life from birth to calculation, usually expressed by age. Age is a natural sign with biological basis. It is an irresistible natural law that a person's age will increase with the passage of the sun and the moon after birth. Psychological age means that the age characteristics revealed by people's overall psychological characteristics are not completely consistent with the actual age.

Characters classified by age

In this monograph on soul medicine, there are roughly four ways for human beings to calculate their age. Calendar age, that is, full age or full age, is also called full age after birth. It is the most commonly used method to calculate their age, which is simple and easy to master, and it is also an objective record that is independent of human will. Relative effective age means that human beings are different from other creatures and dominated by the highest soul, which conforms to human social ethics.

Biological age, that is, physiological age, is calculated according to the physiological and anatomical development state of normal human body, indicating the actual aging degree of individual organizational structure and physiological function, which can be used to predict the future health status of individuals and estimate their life span. It is a term in psychological intelligence test, which measures the intelligence level of human body according to the results measured by standardized intelligence test scale.