The telephone number 400657008 appears as a customer service contact on the building of a boot camp in Shandong China. The boot camp is for young people with internet addiction. It appears on a documentary called Boot Camps for Internet Addicts, which first aired in 2019.
The full name for this school in Chinese is 山东雅博教琣训学校。Here Shandong 山东 refers to the name of a province in China, about two hours south of Beijing. 雅博 is the name of the man who set up the teaching 教 discipline 琣训 school 学校.