On January 23, 2019 (December 18, 2018 in the lunar calendar), the world's first batch of somatic clone disease model monkeys were born in China. Photo provided by the Institute of Neuroscience, Chinese Academy of Sciences On January 23, 2019, in Songjiang, Shanghai, the Institute of Neurology, China Academy of Sciences announced two major scientific results. On January 24, five somatic cell cloned monkeys with disturbed biological clocks appeared on the cover of China's comprehensive English journal National Science Review, marking the maturity of China's somatic cell cloning technology. Batch cloning of experimental disease model monkeys "shines into reality." The number of experimental animals used around the world is expected to be significantly reduced, and drug research and development has entered the "fast lane." First, following the birth of two cloned monkeys, Zhongzhong and Huahua, in China on November 27, 2017, the experimental platform of the Institute of Neurology of the Chinese Academy of Sciences in Suzhou successfully cultivated five cloned monkeys again. The second is the birth of these five cloned monkeys, which started from the idea of scientists at the Institute of Neurology to establish a monkey model with a rhythm disorder to help the study of human mental diseases. At present, scientists around the world have not yet found a root cause explanation for common diseases such as depression, insomnia, and Alzheimer's disease (Alzheimer's disease) that pose a huge threat to human health. Research on the causes of biological rhythm disorders may be an important research direction to solve these diseases. The "original body" of the five cloned monkeys this time is an experimental monkey that scientists have discovered to have biorhythm disorders and have mental illness symptoms.