"It is not easy to think about a porridge and a meal; Half a thread, the motto "thinking things is hard to hold" comes from Zhu Jiaxun. Zhu Zi's Family Instructions is a family instruction book written by Zhu, a thinker of Ming Dynasty in China, which emphasizes the importance of frugality and cherishing materials in family life. This proverb expresses the meaning of cherishing every inch of cloth in every meal and reminds people to keep a sense of cherishing and saving material life at all times.