In recent years, Rugao City, Jiangsu Province, has made great efforts to build an urban ecological system pattern of water green integration and green beauty integration. The urban grade has been greatly improved, and the people's sense of gain and happiness has been constantly improved. In the golden autumn, Rugao Longyou River Ecological Park is full of blue water, colorful banks, and beautiful ecological scenery against the blue sky and white clouds. It has become an important choice for citizens and tourists to enjoy holidays to play at home and get close to nature in outdoor parks. According to the data from the Ministry of Culture and Tourism, the proportion of tourists going to suburban parks and urban parks during the National Day holiday ranked first and third, respectively, with 23.8% and 16.8%. The parks met the needs of tourists for local leisure and short distance tourism. Recently, some cities have tried to demolish the park walls. Since September, 52 urban parks in Chaoyang District of Beijing have successively completed the "demolition of fences"; Shanghai also announced that some parks will be open 24 hours a day. The park that opens the gate is better integrated with the city, and also provides more convenience for citizens and tourists to relax. The real "city living room" Every visitor who has ever been to the Urban Green Heart Forest Park in Tongzhou District, Beijing, will sincerely exclaim, "How big it is!" During the National Day holiday, Mr. Cao's family and his friends came here to visit and relax. The children spent a leisurely day running on the grass, playing Frisbee or playing with amusement facilities. During the National Day holiday, the Urban Green Heart Forest Park has become one of the most popular scenic spots in Beijing, with about 120000 people visiting the park in seven days. After two years of operation, the urban green heart forest park has received nearly 5 million tourists. This park is an important part of the green space pattern of "one belt, one axis, two rings and one center" in the sub center of Beijing, and is called the "green lung" of the sub center. The most special thing is that the urban green heart forest park is an open park without walls at the beginning of planning and construction. The park, with a total area of 11.2 square kilometers, has no fences or walls and is connected to the surrounding road network for tourists to enter. In addition, in order to meet the needs of people of different ages, the park continues to promote the deep integration of green space with urban functions such as culture, tourism, science popularization, sports, leisure, etc., adding recreation projects, introducing cultural facilities such as China Bookstore, etc., and transforming the old factory buildings into stadiums, hotels, etc., so that it can truly become a "city living room" with beautiful scenery and meeting people's needs for leisure and recreation. In July this year, Beijing announced that it would take the Yuandu City Wall Heritage Park and Qingfeng Park as the pilot sites to remove the fences, so that the park's beauty can truly blend with the city, and explore a new mode of open management of urban parks. Take the Yuandu City Wall Ruins Park as an example. The park is a ribbon shaped, 4.8km long from east to west. In the past, there was a circle of concrete piers and iron fences around the park, with 19 gate areas. After the fence is removed, visitors can walk into the park from the sidewalk without knowing it. Recently, the walls of Zhongshan Park, Lu Xun Park, Fuxing Park and Jing'an Sculpture Park in Shanghai have also been opened, and the landscape in the park is integrated with the street view. On October 1, Hangzhou welcomed the 20th anniversary of the "Free West Lake". In 2002, Hangzhou proposed to "return the lake to the people". On October 1 of that year, the West Lake South Line Scenic Area was free of charge