Kang Yuhui patrolled the Inner Sand Lake. Hubei Province Water Conservancy and Hydropower Research Institute provides a picture of Hubei Province. It is named after the lake and is thriving because of the lake. Lakes are the unique natural resources of Hubei and the "lifeblood" of the sustainable development of Hubei's economy and society. Two kilometers to the east of the intersection of the Yangtze River and the Hanshui River is the Neisha Lake, which is "the best lake in Wuhan, one of the best". At present, the water quality of Neisha Lake is continuously stable in the surface water class II, clear to the bottom, rich in biodiversity, and has become the home of Spotted Duck. Today, I have to say that one person is Kang Yuhui when I mention Neisha Lake. In 2012, he graduated from the Nanjing Institute of Geography and Lakes of the Chinese Academy of Sciences. Facing the "scramble" of five households, he chose the cause of lake protection in Hubei. He has been engaged in lake ecological protection and water ecological research for ten years. He has worked in the field for a long time. His skin is dark and his hands are rough than those of migrant workers. Kang Yuhui inspected the growth of water plants in Neisha Lake. Hubei Provincial Institute of Water Resources and Hydropower Sciences, with a warm blood, successfully established the "Inner Sand Lake Model" to explore the effective technical route for ecological restoration of degraded lakes in Hubei Province. He braved severe cold and extreme heat, ran all over the lakes around Wuhan, investigated the degradation status of lakes in Hubei Province, explored the causes of degradation, and carried out a large number of indoor and outdoor simulation experiments. In order to find the indigenous species suitable for the ecological restoration of Hubei lakes, he searched all the ditches around Wuhan. On the basis of a large number of basic investigations and indoor and outdoor experiments, Dr. Kang Yuhui creatively put forward a technical scheme for ecological restoration of degraded lakes aiming at the characteristics of lake degradation in Hubei Province, and carried out an engineering demonstration in Neisha Lake in Wuhan. The demonstration project has achieved great success. The restored Neisha Lake has a clear water body, and its water quality and landscape effect have been significantly improved. The underwater forest is densely covered, and it can be seen that snails and swimming fish inhabit it. The water quality of the lake as a whole has reached the Class II standard for surface water. The residents who moved away from the lake due to its dirty and smelly water have moved back, and a harmonious and symbiotic benign ecosystem has initially formed, It was fully affirmed by the experts of the Ministry of Water Resources who participated in the acceptance evaluation of the "Hubei strictest water resources management system pilot" and praised "the water can really be called clear and bottomless". The technical scheme of the Neisha Lake demonstration project has gradually been recognized by the industry, and is known as the "Neisha Lake Model" for ecological restoration of degraded lakes, which has been promoted and applied inside and outside the province. During the epidemic in 2020, it will provide a good living environment for the national epidemic prevention team in the East Lake Hotel. At the beginning of 2018, Dr. Kang Yuhui was invited to undertake the emergency guarantee of water quality of Baihua Lake in Wuhan East Lake Hotel, which was provided by Hubei Provincial Institute of Water Resources and Hydropower Sciences. Dr. Kang Yuhui led the team to use the "Inner Sand Lake Model" in line with local conditions, which improved the water quality of Baihua Lake from inferior to Class V to Class III surface water within two weeks, providing water quality and environmental protection for the East Lake meeting between the leaders of China and India, and was highly praised by provincial and municipal leaders. The key guarantee project of the 7th Military Games - the water quality improvement project of the Inner Lake of Tingtao Scenic Spot in Wuhan East Lake Scenic Area has achieved the water quality guarantee goal of the Military Games six months in advance by using the "Inner Sand Lake Model". At present, Dr. Kang Yuhui is fighting for the water quality of the swimming (open water) competition in the military games