Three days tour in tianyan, tiankeng, tianshu

Is known as \"China\'s eye\" of the 500 - meter aperture spherical radio telescope (FAST) is the world\'s largest single caliber, the most sensitive radio telescope, location in the town of PingTang county in guizhou g degree big nest 凼 natural tiankeng, since September 2016 after the completion of guizhou, has attracted many attentions of the society, more and more people want to catch a glimpse of the \"eye\".