On November 25th, CDEX (China Dark matter EXperiment) collaboration, led by Tsinghua University, published an article entitled “Search for Light Weakly-Interacting-Massive-Particle Dark Matter by Annual Modulation Analysis with a Point-Contact Germanium Detector at the China Jinping Underground Laboratory” in Physical Review Letters (Phys. Rev. Lett. 123, 221301, 2019).