Intelligent water supply, intelligent parking, intelligent lighting and other services provided by the intelligent system have been applied in Shenzhen, Nanjing, Hangzhou and other cities in China, improved the city management, reduced the energy consumption and greenhouse gas emissions, improved the city's liveability level, and promoted the cultivation and development of new enterprises. Specifically, it works on the transposition from published oneM2M standards, which include 18 technical specifications and six technical reports into ITU-T SG20. Those oneM2M standards have been widely used in loT and vertical areas, e.g. the Smart Cities Project in Busan, Republic of Korea. This work remarkably contributes to the convergence of global loT standards and the alignment of work, as one of the ITU-T strategic objectives is cooperation and collaboration.