Chenghai District, belonging to Shantou City, Guangdong Province, is located in the eastern part of Guangdong Province, the northeast of Shantou City, the Han River Delta at the mouth of the sea, northeast of Raoping County, Chaozhou City, northwest of the boundary of Chaozhou City, Chaoan District, southwest of Shantou City, Longhu District, southeast of Nan'ao County, across the sea. The Tropic of Cancer crosses the district, with a total area of 345.23 square kilometers. As of 2019, Chenghai District has 3 streets and 8 towns under its jurisdiction. According to the seventh census data, as of 00:00 on November 1, 2020, the resident population of Chenghai District was 874,444 people. Chenghai is one of the famous overseas Chinese hometowns in Guangdong Province, overseas Chinese history and culture is rich, since ancient times is the "Maritime Silk Road" port of departure and an important node, Zhanglin ancient port as the red-headed ship set sail to the holy land, overseas compatriots in the heart of the "spiritual homeland" and the base of the roots, is the hometown of the red-headed ship. The hometown of the red-headed ship. Chenghai people living abroad has a long history, overseas Chinese overseas Chinese all over the world continents, Chen Cihong former residence is known as "Lingnan first overseas Chinese residence", is the rare Chaoshan and even the country's rare historical relics, is a microcosm of the culture of overseas Chinese in Chaoshan. It is the "China Toys and Gifts City", "China Toys Manufacturing Base", the only "Intelligent Toys Creative Design and Manufacturing Industrial Base" recognized in the National Torch Program, and the only "China Toys and Gifts Manufacturing Base" in the country. It is also the only "China Toys and Gifts Export Base" in China. In 2021, Chenghai District realized a GDP of 48.668 billion yuan, an increase of 5.8%, with an average growth rate of 1.4% in two years. The primary industry added value of 4.180 billion yuan, an increase of 2.1%, an average of two-year growth of 1.8%; the secondary industry added value of 25.439 billion yuan, an increase of 5.3%, an average of two-year decline of 2.4%; the tertiary industry added value of 19.050 billion yuan, an increase of 7.5%, an average of two-year growth of 7.2%. The ratio of the three industries is 8.6:52.3:39.1. In October 2021, it was selected as one of the "2021 Top 100 Smart Cities in China".