2. This poem comes from Bai Juyi's masterpiece "Heaven can be measured" in Tang Dynasty.
3, the original text: the sky can be measured, the earth can be measured, only the human heart can not be prevented. But seeing Dan Cheng as blood, who knows that false words are like a spring. I advise you to cover your nose instead of your face, so that husband and wife can participate in the business. I advise you to stop being a bee so that your father and son can become wolves. Fish at the bottom of the sea are like birds in the sky. They can shoot high and catch deep. Only when people's hearts are antagonistic can they be unpredictable. Have you noticed that people in Li Yifu laugh at Yan Yan, and there is a killing knife in her smile? Yin He's change is measured, but what is unexpected is _ human laughter.