The Panyu-Jena-Day in November 2021 gave companies from Thuringia and China the opportunity to exchange ideas on topics such as smart cities, digitalisation, optics/optoelectronics and sensor technology as well as science and research. With "smood® - smart neighborhood", ThEEN provided the German keynote at the digital business meeting between Guangzhou and Thuringia and illustrated how smoodTECHNOLOGIES create energy-efficient neighborhoods. At the subsequent Smart City Round Table, moderated by Jana Liebe, participants presented their approaches and technologies for the digitalisation of cities with the aim of establishing international cooperation.