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

过去总是紧张的，而未来是完美的。

Sustainability is not an option; it's a necessity for the future of our industry.

Technology itself has no value, its value lies in what problems it solves.

I wish I could write as mysterious as a cat.