Prof Cao was invited to join the editorial board of Journal of Physics-Condensed Matter, which is published by IOP (Institute of Physics, UK) with a SCI IF: 2.333. This is the second term for Prof Cao, and he will handle the papers in the area of Structure, dynamics and phase transitions, especially related to Thermal properties, Lattice dynamics, lattice effects and phonons etc (https://iopscience.iop.org/journal/0953-8984/page/section-structure).