There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false. A thing is not necessarily either true or false; it can be both true and false.
The Belt and Road construction should adhere to the principle of extensive consultation, joint contribution and shared benefits.
Don't look for the needle in the haystack. Just buy the haystack!
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.