The 2023 Academic Annual Meeting and Forum on Geothermal Technology Development of the Geothermal Professional Committee of the China Energy Research Association will be held in Datong, Shanxi from July 25th to 28th, 2023, with the theme of "Practicing Geothermal Mission and Building a New Energy System". Yantai Land introduced the application experience of multi-stage extraction of geothermal tailwater heat and the demonstration case of 1.1 million square meters of heating area by Daqing Lindian Tianxing Group.