《左传·昭公·昭公十三年》
子产、子太叔辅助郑定公参加会见，子产带了帷布、幕布各九张出发，子太叔带了各四十张，不久又后悔，每住宿一次，就减少一些帷幕。
子产以幄幕九张行。子大叔以四十，既而悔之，每舍损焉。
Zichan and Zitai Shu assisted Cheng Dinggong in attending the meeting. Zichan brought nine veils and screens when he traveled, Zitai Shu brought 40 each, but he soon regretted it. He reduced the number of veils every time he stayed overnight.