Zhou Suozhou knows, our country in last few years speed of development of science and technology is swift and violent, had been close to a developed country in a lot of respects, but in aviation domain respect we still are put in the question with very much move really, this problem is aviation engine. The core of this aviation engine is single crystal lamina, and there is euqally indispensable chemical stuff if studying lamina of this kind of single crystal, it is one of most rare elements in earthly lithosphere, this material is rhenium. This is a the latest kind of when the mankind discovers crude element, use is very extensive, can use each fields, but its nature stores the quantity is very exiguous, more far the origin under rare earth, can say dispute often is adopted very hard, even more difficult than diamond even exploitation is gotten. Because the rhenium element of our country is very exiguous, be in but under, our country is to spend big price to be imported from abroad, however advanced before long, the gouge in the big hill that managing our country treasure, this treasure is rhenium mine. The treasure of this world-class falls into the hand of our country people so, allegedly this rhenium mine is as high as 176 tons, 7% what held the whole nation, can use time of 50 years about, this lets each country envy unceasingly, come round to beg in succession. Also think even the United States to beautiful day price is bought, each country was to put forward resource to share even, do not know young associate people what view to have to this? The welcome leaves a message. . . . . . .