This sentence originated from the propaganda slogan of China Shandong Lanxiang Technician College (referred to as "Lan Xiang Technical School"). The college is famous for its outstanding performance in engineering skills training, especially in the field of excavator driving and operation. Since its establishment, Lanxiang Technical School has trained a large number of professional talents, and its excavator technical training course once became one of the school's signature courses.

"Which excavator technology is the strongest" represents the overall strength improvement of China's engineering technology and vocational education system in personnel training and technological innovation. Many vocational and technical schools and training institutions in China have performed well in excavator technical training.