I think the most suitable cities for people to live are as follows:The first one is Shanghai, which is the national central city, the international center of economy, finance, trade, shipping, and scientific and technological innovation, and the first batch of coastal open cities. Famous colleges and universities include Fudan, Jiaotong University, Tongji and Huashi. Famous attractions include the Bund, Huangpu River, Nanjing Road Pedestrian Street and so on. The second one is Chengdu, which is located in the southwest of China. Chengdu has good medical conditions, as it has almost 20 triple-A hospitals such as Huaxi Hospital, which has a high level of medical care. Chengdu has a rich nightlife, which is perfectly in line with the ? The city has a rich nightlife, which is perfectly in line with the title of "the city that never sleeps". The city has a rich nightlife, which fully meets the title of "the city that never sleeps". Chengdu has a great variety of food, a long history, and a wide range of snacks, which are available on every street. There are also many shopping centers in Chengdu with many famous brands in the world. The third is Dalian, which is the second largest city in Liaoning Province, across the sea from the Shandong Peninsula. The green coverage of Dalian city has reached 41%. Dalian has a picturesque landscape and is the largest port city in Northeast China. Attractions in Dalian include Binhai Road, Xinghai Park, Jinshitan Beach, Shengya Ocean World and Snake Island. There are also many dining places in Dalian, and some of the more famous seafood restaurants are Pin Hai Lou, Tian Tian Fishing Harbor, Fu Ge Seafood Workshop, Ma Ji Seafood Restaurant and so on. Shopping in Dalian is also very convenient, there are many large supermarkets. Clothing looks good, there are a lot of specialties like red shrimp pastry candy and other seafood products, Dalian cherries and other fruits and shellfish carving handicrafts and so on. Fourth is Xiamen, Xiamen is located in Fujian Province, is a city surrounded by sea water. Xiamen has a very good ecological environment and is a habitat for egrets, so Xiamen is also known as ? Heron Island? Xiamen's climate belongs to the subtropical maritime monsoon climate, the environment here is clean, the air is fresh, the climate is suitable for all seasons of the year, the scenery is very beautiful. Famous attractions include Hulishan Fortress, Nanputuo Temple, Gulangyu Island, Wan Shi Botanical Garden and so on. Fifth is Qinhuangdao, Qinhuangdao is the name of the emperor, is a national historical and cultural city, the climate here is pleasant, the summer is not very hot, and the winter is not very cold, it is the world's most famous city for summer vacation. The environment is its biggest advantage, with high forest coverage and more than 400 species of birds. Famous attractions include Beidaihe, Qinhuang Seeking Immortality into the Sea, Shanhaiguan, Jade Island, Jiao Shan, Zushan, and Gold Coast.