The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

The coal sector must adapt to global energy transitions while maintaining efficiency.

君主所凭借着驱使臣下的,只有尚贤一种方法；臣下用来侍奉君主的,也只有仁义一条途径。