Explanation: original intention: to show respectful teaching to students. It is a metaphor for respecting teachers and stressing morality.
Said by: Biography of Shi Yang in Song Dynasty: "I was forty years old when I met Cheng Yi in Luo. One day when I saw H, I just sat still, and I stood with you on the left. By the time I felt it, the snow outside the door was already a foot deep. "
perspicacious
Commentary: According to legend, Wang Xizhi wrote on the board, and when the carpenter carved, he found that the handwriting penetrated into the board for three minutes. Original intention: to describe the great brushwork of calligraphy. Nowadays, the problem of metaphor analysis is very profound.
From: Zhang Tang Huai Guan's Book Breaking Wang Xizhi: "Wang Xizhi's book is willing to be published, cut by workers, and the pen is incisive."