以心问心

Explanation: In the minds of ourselves from calculations. 　　Source: Ming Ling Mengchu "Early carved Pai An Jing Qi" Volume 27 [known concept] to the heart to ask ourselves, suddenly said 'there is a meter. '" 　　Examples: [Imperial] ~, Diezu Road 'thing two decades, three or four thousand miles of road, there is even audit department? '★ Ming Ling Mengchu "two carved Pai An Jing Qi" Volume