Diet: Asian people's diet is mainly rice, vegetables, fruits, tofu, fish and so on. These foods are usually rich in nutritional fiber, protein, vitamins and minerals, and are usually low in fat and sugar. This healthy diet helps to prevent chronic diseases such as heart disease, stroke and diabetes.
Lifestyle: Asian lifestyles usually focus on physical exercise, such as walking or cycling all the year round. In addition, many Asian cultures also emphasize mental health and stress management, such as meditation, yoga and Tai Ji Chuan.
Genes: Studies have shown that some genetic variations in Asian populations are related to longevity, such as FOXO3 gene, which is more common among the elderly in Japan, China and other regions.
Please note that the above is only one of the possible reasons. The diversity of human life span is the result of many factors, including but not limited to heredity, environment, diet and lifestyle.