力学笃行

Explanation: Mechanics: study hard. Dusing: effectively implemented. Diligent study and practice exactly what they have learned. 　　Source: Lu Song "Lubo Zheng Shan Tang draft order": "Bo political lineage to Confucianism, mechanical Dusing, to the old lot of bad." 　　Examples: A brother Xiao Xiao Wen Ru, ~, first Xiao Ru death. ★ "History of the Ming Fang Xiaoru Biography"