On the morning of May 27, 2021, Prof. Yidong Huang visited Huairou Science City. Binbin Dai，secretary of Huairou District Party Committee, accompanied by Wenjie Guo, deputy head of Huairou District, introduced the construction progress of Huairou Science City. The two sides conducted in-depth discussions on further strengthening exchanges and cooperation and developing the optoelectronic chip industry. 

Professor Huang expressed that the Department of Electronic Engineering of Tsinghua University has a number of world-leading optoelectronic chip research achievements, and actively expands the research and development of new dimensions, methods, mechanisms, bands, materials, and their system applications. It is of great significance to promote the innovation and development of new advanced photoelectric sensors with completely independent intellectual property rights in China by further promoting the world-leading achievements into industrialization. 

Secretary Dai stressed that Huairou Science City is positioned to face the forefront of science and technology in the world and the major national needs, to build a world-class original base and open scientific research platform, to guide and promote the accumulation of high-end innovation resource elements, and to create a new landmark of science and technology innovation center. It is hoped that the optoelectronic chip research and development projects of the Department of Electronic Engineering of Tsinghua University will be settled in Huairou Science City as soon as possible and lead the development of Huairou Science City. 

The two sides reached an agreement on the establishment of the "Beijing Engineering Research Center for Optoelectronic Devices".