In the song Dynasty ， there was a scholar whose name was Wen Tong and who styled himself Yuke. He was not only admired by others for his great learning， but also enjoyed widespread renown1 for his bam to ask for one of his bamboo drawings.
As a matter of fact， there were quite a few painters contemporary with him who could draw bamboos fairly well. But how did it happen that Wen Tong drew better than anybody else? Of this point Su Shi and Chao Buzhi， both of whom were Wen Tong’s good friends， gave vivid explanations in their respective poetic2 and prose works.
Actually， No matter what season it was and no matter whether it was sunny or rainy， to go to the bamboo forest to observe how they were growing. He pondered over the length and breadth of the bamboo poles as well as the shapes and colours of the leaves. Whenever he had gained a new understanding， he went back to his study， spread a piece of paper and prepareed some ink by rubbing an ink stick on an ink slab3 ， over a long period of time， the images of the bamboo in different seasons， under different weather conditions and at different moments were deeply imprinted4 with concentrated attention， forms of the bamboo which he had observed at ordinary times at once rose before his eyes. And so every time he was drawing bamboos he appeared confident and at ease， and all the bamboos he had painted were very vivid and true to lift.
When people spoke5 highly of his paintings， put the images of the bamboo imprinted in his mind on the paper.
A young man wanted to learn bamboo drawing; when he knew that Chao Buzhi had made a profound study of Wen Tong’s art of drawing， he went to Chao Buzhi for instruction. Chao Buzhi wrote a poem to him. In the poem， there are the following two lines:
When Yuke was painting the bamboos，
He bad their images ready in his bosom6.
Later people have summarized the lines as " having had the images of the bamboo ready in one’s bosom，" which means having had ready plans or designs in one’ go mean being calm and cool - headed in dealing7 with things.
from an article writted by Su Shi concerning Wen Yuke’s art of bamboo drawing.