Various entertainment activities, such as piano, chess, calligraphy and painting, flowers and trees, birds and fish, sightseeing, art appreciation, etc. It can refresh the mind, prevent diseases and strengthen the body. Qin, chess, books and paintings are called the four major interests by the ancients, and they are also the main forms and methods of entertainment and health preservation. Throughout the ages, health-preserving people have advocated climbing mountains and traveling far, enjoying flowers, trees, birds and fish, while Taoist and Buddhist temples and temples are mostly built in places close to mountains and rivers with beautiful scenery, so as to obtain fresh air of mountains and rivers and cultivate sentiment.