This is a "Chinese fish" that can swim 10000 meters under the sea. 3.8 meters long, orange fish back, yellow fish belly, a pair of big eyes, bright and God! Who is it? It is China's self-developed all sea deep autonomous remote control submersible - "haidou-1". The deep-sea space with a water depth ranging from 6000 meters to about 11000 meters is called the "sea bucket abyss" by scientists. It is a mysterious world that human beings do not know much and the deepest ocean area on earth. What is the abyss like? What kind of creatures live there? How about the ecological environment? What resources are hidden... Exploring these problems is not just to satisfy human curiosity. Peng Xiaotong, a researcher at the Institute of deep sea science and engineering of the Chinese Academy of Sciences, once wrote: "the deep-sea technology represented by abyssal entry technology and abyssal exploration technology represents the top level of current international deep-sea engineering technology; the abyssal scientific research represented by abyssal Geoscience and abyssal life science represents the latest frontier of current international deep-sea scientific research." Top level! The latest frontier! One can imagine how difficult it is to explore the abyss of the sea fight. Communication, control, materials... There are difficult problems everywhere. The most difficult thing is how to overcome the deep-sea pressure. Because the pressure will increase by one atmospheric pressure for every 10 meters of seawater depth. This means that in 10000 meters of the seabed, an area the size of a fingernail has to bear a ton of weight. However, this is the peak that must be conquered to build a maritime power. With the support of the key project of "key deep-sea technologies and equipment" in the national key R & D plan of the 13th five year plan, Shenyang Institute of automation of the Chinese Academy of Sciences, together with more than 10 domestic scientific research institutions, has finally "chewed" this hard bone in nearly four years! For the first time in China, "haidou-1" has adopted the full sea depth high-precision acoustic positioning technology and airborne multi-sensor information fusion technology, which can meet various needs of scientific research. It has a fully intelligent and flexible arm that can grasp and release the sea; It can also "see" - through high-definition camera systems and other equipment, human beings can finally see the true face of the sea fighting abyss. In May 2020, haidou-1 first explored the Mariana Trench. 10884, 10907, 10802, 10863... These figures not only represent the world record of unmanned underwater vehicle broken again and again, but also show the excellent stability of haidou-1. The samples and image data obtained by it provide valuable first-hand data for Chinese scientists to deeply study the underwater world, and are still producing scientific research achievements. In October 2021, "haidou-1" again explored the Mariana Trench, made important breakthroughs in many technical indicators such as navigation time, voyage and continuous bottom sitting time, and realized large-scale and full coverage cruise detection of the western depression of the Mariana Trench Challenger abyss for the first time in the world. Li Shuo, deputy director of Shenyang Institute of automation, Chinese Academy of Sciences, said: "the success of haidou-1's continuous 10000 meter deep diving and scientific research application marks the entry of China's unmanned underwater vehicle technology and equipment into a new stage of all sea deep exploration and operation application, and China's entry into the international leading level in the field of all sea deep unmanned underwater vehicles." Follow up tasks are in full swing. Li Shuo said: "in addition to carrying out the abyssal scientific research task as planned, we will also further improve the intelligent level and scientific research application ability of haidou-1, so as to make greater contributions to promoting the development of the national deep and open sea strategy." The story of "haidou-1" will continue, and the future will be more predictable! (Xinhua News Agency)