衡虑困心

Explanation: Described as painstaking. Phrase from the "Mencius, under the": "trapped in the mind, value for the consideration and then make." 　　Source: Phrase from the "Mencius, under the" trapped in the mind, value for the consideration and then make. " 　　Examples: Intermediate solution reduced food clothing, ~, body skin bones, are not extravagant exhausted, collecting only hereby. ★ Ming Hu Ying-lin, "Shao Shishan room document cluster membership will pass through four"