Rugao City, Jiangsu Province (a county-level city under the jurisdiction of Nantong City), located on the jianghai plain on the north bank of the Yangtze River, is a newly emerged longevity county with a total population of 1.45 million and 172 centenarians. 4 people over 9 years old; 4, people over 8 years old; There are 275, people over the age of 6, and the average life expectancy has exceeded 75.5 years.

Experts believe that Rugao's longevity is related to the local environment, water quality, diet structure and daily life.

As far as food is concerned, the local gingko, radish, longevity fruit, dried tea, tide cake and buckwheat cake all have longevity effects.

As far as users are concerned, straw mats, clogs, buckwheat shell pillows, crocks, iron pots and Chinese fir pots are all wonderful for keeping fit.

As far as art is concerned, Rugao is one of the seven schools of bonsai in China, the four places where kites are produced in China and the three schools of seal cutting in China, and its contribution to raising the year can be fully expressed.

At present, there are historical and cultural sites related to longevity and health preservation, such as Baisuixiang, Wanshoutang and Shuihui Garden, as well as longevity culture and folk customs such as Baisuiwan, Guobailu and Qianmi.

Although the longevity factors of the elderly involve various aspects, eating habits are a dominant factor that cannot be ignored. As the saying goes, "Food is the most important thing for the people" is an eternal truth.

The foods that Rugao longevity old people often eat are: corn grits, soybeans and bean products, radishes, sweet potatoes, peanuts and so on.

local people and health care institutions believe that these foods are closely related to people's health and longevity.