Global Youth Science and Technology Bowl (GYSTB) is an international student science competition in biology, chemistry, physics and engineering in Hong Kong. It is organized by the Hong Kong Federation of Youth Groups. The competition is a showcase of global youth scientific achievement and innovation, which aims to promote science and technology, provide a platform for global youth to develop their creativity and scientific mindsets, and facilitate the exchange of scientific ideas, interests and abilities among young scientists all over the world. Science talents all over the world will compete for the grand prizes with their research reports and prototypes. This year, the competition will go online due to the global outbreak of COVID-19.