There are many key unlocking training schools in China, taking Julong Unlocking Technology Training School as an example. Julong Unlocking Technology Training School is a professional unlocking training school under Lightning House, which specializes in learning unlocking technology, car unlocking technology, unlocking teaching, car anti-theft decoding technology, key unlocking for civil locks, safe unlocking, car key matching, car remote control key matching and other technologies. Julong unlocking technology school has professional unlocking technology, and the unlocking school provides professional and formal unlocking technology teaching. Choose Julong Unlocking School, so that you can learn the real unlocking technology.

Unlocking, also known as "round lock", is a folk custom in Shanxi, Hebei, Shandong, Henan and Shaanxi provinces. This custom, which is mainly popular in northern rural areas, is an intellectual enlightenment activity for children who have reached the age of twelve.