This is a mosaic photo: the first reflective panel assembled by "China Tianyan" (upper left, taken on August 2, 2015), the installation of nearly half of the reflective panel of "China Tianyan" (upper right, taken on December 16, 2015), the installation of nearly 80% of the reflective panel of "China Tianyan" (lower left, taken on March 9, 2016), and the maintenance period of "China Tianyan" (lower right, taken on July 21, 2022). Xinhua News Agency reporter Ou Dongqu took a photo of the vast starry sky above us, what secrets are hidden? Is the deep space of the universe nurturing new opportunities for human development? The mountains are stacked one after another, and the green forest is like a sea. Between the mountains in Pingtang County, Guizhou Province, a magnificent single aperture spherical Radio telescope stands quietly, gazing at the starry sky, and with human curiosity and expectation, it explores radio signals ten billion light years away. The full name of "China Tianyan" is the Five-hundred-meter Aperture Spherical Telescope, or FAST for short. FAST adopts a new design concept. It is the world's largest and most sensitive single aperture spherical Radio telescope. It can search for weak signals from 10 billion light years away in the radio band. Recently, our reporter interviewed Jiang Peng, the chief engineer of FAST at "China Tianyan". As a "star chaser" guarding the "Chinese Eye", Jiang Peng's main research direction is radio astronomy technology and methods. Currently, he is fully responsible for the operation and development planning of the "Chinese Eye". Let's listen to the story of Jiang Peng and the "Chinese Sky Eye" looking up at the starry sky together. Building a "Retina" for FAST In 2009, 31 year old Jiang Peng just graduated with a PhD and was full of energy. At this moment, he stood at a crossroads in life: one choice was to continue to pursue in-depth research in the doctoral field; Another option is to choose a new and challenging research job. While hesitating, Jiang Peng saw the recruitment information for "China Tianyan" and instantly became interested. At that time, in my opinion, the construction of the 'China Sky Eye' was very bold and challenging. Jiang Peng told our reporter that the FAST telescope almost met all of his expectations and ideas for a legendary project - the largest engineering volume, ultra-high precision requirements, and extremely special working methods, which constituted unprecedented technical challenges in the engineering field. I really want to know how this project is going to be implemented, so I want to join this innovative team, "said Jiang Peng. After submitting his resume without hesitation, Jiang Peng smoothly became a member of the team. Afterwards, he plunged into the deep mountains of Guizhou and embarked on a 14 year life with FAST. How difficult is the construction of FAST? It not only involves dozens of different professional fields such as astronomy, mechanics, mechanical engineering, Structural engineering, electronics and even geotechnical engineering, but also has no precedent for key technologies, key materials need to be tackled urgently, and the on-site construction environment is very complex. For the FAST team, the construction of FAST is "crossing the river by feeling the stones". How to design, implement, debug and use after completion... All difficulties can only be solved by the construction team themselves. This is much more difficult than the engineering projects we generally recognize