From March 29th to 31st, 2024, the Chinese Physical Society, together with the Institute of Physics, Chinese Academy of Sciences, Center for Applied Physics, and Yangtze River Delta Physics Research Center, held the first Applied Physics Conference at the Yangtze River Delta Physics Research Center in Liyang, Jiangsu Province, China. The conference aims to provide an open, high-quality, and efficient academic exchange platform for researchers in applied physics and related fields, promoting interdisciplinary collaboration and communication to collectively drive original and leading-edge innovations addressing national strategic needs. Professor Kaiyu Cui was invited to give a presentation, introducing the recent research work on on-chip spectral imaging and optomechanical crystals. The title of the presentation was "Micro/Nano Functional Devices and Applications Based on Photon/Phonon Control".