At the 13th Five-Year Scientific and Technological Innovation Exhibition, as soon as you enter the basic research exhibition area facing the forefront of world science and technology, you will see a booth called Deciphering Aging. No matter men, women and children, everyone always likes to stop here for a while and ask some questions of greatest concern: "What is aging?" "How do I know how old I am?" "How can I grow old slowly?" These problems seem simple, but in fact they are extremely complicated. In the past 10 years, the team of Liu Guanghui, a researcher from the Institute of Zoology, Chinese Academy of Sciences, has been focusing on the research related to aging, hoping to get infinitely close to the answers to the most basic questions of life. Aging is a "procedural" population aging, which is a huge problem facing the world and China. How to solve this problem concerns the well-being of hundreds of millions of people. The draft outline of the 14 th Five-Year Plan proposes that the average life expectancy will increase by one year in the next five years. This is an exciting goal. But Liu Guanghui's first thought was: What kind of year should we add? Is it healthy and calm, or sick? In human experience, "old" and "sick" are always closely linked. "Aging is the biggest risk factor for human chronic diseases. Osteoarthritis, cardiovascular diseases, neurodegenerative diseases ... In fact, many senile diseases occur ... Read the full text.