Haikou intellectual test education intellectual test education is not bad. Haikou Zhikao Education Zhikao Education is an educational enterprise specializing in primary school mathematics training and comprehensive quality development. At present, the courses offered are mainly mathematics plus synchronous upgrading courses. Haikou, also known as Coconut City, is the capital of Hainan Province, the fulcrum city of the National Belt and Road Initiative and the core city of China (Hainan) Pilot Free Trade Zone (Port).