The invesigations on topolotical phonons were just published on JAP: D.S. Tang, B.Y. Cao. Topological effects of phonons in GaN and AlGaN: A potential perspective for tuning phonon transport. Journal of Applied Physics, 2021, 129: 085102 (https://aip.scitation.org/doi/10.1063/5.0043623; http://www.heatenergist.org/publication.asp). The paper was selected as an Editors' Pick as "the Editors felt that your article is noteworthy".