The GreenSys 2017 (International Symposium on New Technologies for Environment Control, Energy-saving and Crop Production in Greenhouse and Plant Factory) will bring together researchers, technicians, academics, and other professionals in greenhouse horticulture and plant factory area to share knowledge and ideas, as well as discuss the state of the art and future perspectives for the greenhouse horticulture and plant factory sector. Beijing, the capital of China, is an ancient city with more than 3,000 years of history. There are many historical places such as the Forbidden city, Summer Palace, Great wall and Temple of Heaven etc, which attract tourists from all over the world. Beijing history is contrasted by skyscrapers and shopping malls everywhere. Furthermore, Beijing is characterised by its cultural spirit of openness, innovation, and inclusiveness with extremely friendly people known for their hospitality.