Floor 2, Longsen Industrial Building, Wuhua Road, Chengnan District, Dongguan City. Dongguan Sanyuan Training School has indeed set up a training school in Wuhua Road, Chengnan District, Dongguan City, providing three-dimensional standard courses and professional courses. Dongguan Sanyuan Training School is located on the second floor of Longsen Industrial Building, Wuhua Road, Chengnan District, Dongguan City. Dongguan is a prefecture-level city under the jurisdiction of Guangdong Province and a megacity. Dongguan is located in the south of China, south-central Guangdong Province, on the east bank of the Pearl River Estuary, with Guangzhou in the northwest, Shenzhen in the south and Huizhou in the northeast.