Guangsen’s research work focused on circadian clock and sleep. On the one hand, he studied the mechanism of circadian feedback loops through the investigation of novel functions of clock proteins. On the other hand, he has screened and identified novel sleep genes driving sleep duration in human populations. Guangsen’s lab will start soon at Zhongshan Institute for Drug Discovery, the Institutes of Drug Discovery and Development, CAS. In this presentation, he is going to introduce the discoveries underlying human short sheep genes.