The meaning of "not knowing how difficult things are until they have happened" means that we only know how difficult things are after they have happened. If you have not personally experienced something, you will not know how difficult it is.

Introduction to colloquial sayings:

Various sayings are created by the masses in Chinese vocabulary and spread in the spoken language of the masses. They are colloquial and popular language units. They are popular and widely popular. The stereotyped sentences are concise and visual, and most of them are created by working people. Reflect people’s life experiences and aspirations. Common sayings, also known as common sayings and proverbs, are synonymous with each other.

The word "slang" has been widely used as a linguistic term; the word "shangyan" has the color of classical Chinese; the word "slang" has the flavor of spoken language. Common sayings make people's communication more convenient and interesting, and have local characteristics.

Basic information:

The author’s name is unknown. Record ancient and modern proverbs and dialects, marking them as original. Evidence can be found in all classics and history books. They are taken from the Shuo Department, and the title of each book is noted below. Although it is a common saying, the research is quite close to ancient times. However, for example, Shi Dafu claimed to be the master and quoted Zuozhuan and Guoyu, but Zhou Li's article on winning the people as the master was not cited, so the biography was recorded and the scriptures were left behind.

It is also explained as the king of the county and the king of the county. The fourth rank of the wife of the official mother of Yuan Dynasty was given to the county king, and the fifth rank was given to the county king. However, Emperor Wu of the Han Dynasty honored the queen mother of the queen mother as the king of Pingyuan, and the Hanjun of Pingyuan was granted the title of county. The system of kings began in the Han Dynasty. In addition, Emperor Wu granted the title of Xiuchengjun to the granddaughter of the King of Jin, and established the county of Han Dynasty. Therefore, the system of enfeoffing county monarchs also began in the Han Dynasty. This book only records Yuanpinguan, so it is introduced from the later period and left behind.

Also in terms of phonology, it is said that the northerners use steps as cloth, which is a fallacy in dialect pronunciation. I don’t know that the footstep notes in Zhouli can be read in full. "Spring and Autumn Interpretation" Pu Pu Zhi Pu Yi Zuo Bu Yin, it has four tones and can be turned together, Kuang Bu Bu is the same rhyme, but the reading is different. This is because I am ignorant of ancient readings, so I have not understood the purpose of Tongfang.

Formation:

Slang is one of the idioms, which refers to sentences that are conventional, widely popular, and have concise images. From a broad perspective, colloquialisms include proverbs, idioms, idioms and idioms commonly used in spoken language, but do not include dialect words, colloquial words, idioms in written language, or famous aphorisms in famous books.

In a narrow sense, colloquialism is one of the genres with its own characteristics, which is different from proverbs and idioms, but some colloquialisms are somewhere in between. Common sayings come from a wide range of sources, not only from the oral creations of the people, but also related to famous poems, aphorisms, historical allusions, etc.