Ovyeor the past two years, reconfigurable intelligent sur-face (RIS), as a promising emerging technology for Be-nd 5G (B5G) and 6G mobile communications sys-tems, has attracted enormous interest from both aca-demia and industry worldwide. In IMT-2030 (6G) Promotion Group of China, the RIS task force was created in June 2020. In IEEE, an emerging technology initiative (ETI) of RIS was formed in July 2020. In ETSI, an industry specifications group (ISG) was kicked off in September 2021. In 2022, RIS Technol-ogy Alliance (RISTA) will be established. Initial field trials of RIS have been conducted by several companies and universities.