The compass is an important instrument widely used in astronomy, geography, military affairs, navigation, and the selection of housing and tomb sites. It is the continuation and development of the compass, one of the four great inventions of ancient China. The Wan'an compass is the only existing compass in the country that is handmade with traditional skills. It is produced in Wan'an Old Street, Wan'an Town, Xiuning County, Anhui Province today. The Wan'an compass manufacturing industry emerged at the latest in the late Yuan Dynasty, developed in the Ming Dynasty, entered its heyday in the middle of the Qing Dynasty, declined for a time in the late Qing Dynasty, and revived its glory in the early years of the Republic of China and continued until the early 1960s. After a pause of nearly 20 years, it resumed production in 1982. The Wan'an compass inherits the traditional Chinese compass making skills, has formed its own characteristics in the long-term production process, and has strict requirements on the technical process and techniques. Generally, it takes 6 processes to make a compass. First, the special wood "Tiger Bone Tree" (scientific name: Chongyang Wood) is selected and sawed into a compass blank. Then the blank is rounded and polished, and the circular hole for the magnetic needle is dug. Then the grids are drawn and the disk is written on it. Then tung oil is refined and oiled on the compass. Installing the magnetic needle is the last and most critical process. The owner operates it alone in a secret room. The work includes magnetizing the steel needle, determining the center of gravity of the magnetic needle, and installing the needle. Wan'an compasses can be divided into three types according to the disk type: three-in-one disk, three-yuan disk and comprehensive disk, and there are about 11 specifications according to the diameter. The compasses produced by Wan'an are unique in design, exquisite in material selection, excellent in production, and complete in variety. They are regarded as authentic compasses and enjoy the reputation of "Hui Luo" and "Hui Pan". In 1915, Wan'an compasses and sundials were exhibited at the Panama World Expo and won the gold medal. Wan'an Compass carries cultural information on ancient Chinese astronomy, geography, environmental studies, philosophy, Yijing, architecture, etc., and inherits magnetic compass technology and related skills. It has important value for studying the history of ancient Chinese science and technology, social history, human living environment and the history and culture of ancient Huizhou.