At the 5th International Conference on Optoelectronic and Microelectronic Technology and Application (OMTA 2021), Huawei released key technical challenges for optical communications in the next decade. Tang Xiaojun, chief technical planner of Huawei's Optical Business Product Line, said: "Based on our understanding of optical communications, we propose the key technical challenges that may be encountered in the next 10 years and release them to the whole society. We hope that everyone will work together to overcome these challenges and create a brighter future for the optical communications industry."