The meaning of the red line is to protect the media. Saying and promoting a good couple for a young man and woman is called pulling a red line. Most people in the world only know the term "red line", but they don't know where this allusion comes from. During the Tang Dynasty, there was a man named Guo Yuanzhen, who was brilliant and looked like a talent. Guo Yuanzhen once passed the entrance examination, and at that time there was a tradition of catching a son-in-law under the list. Whenever the imperial examination puts the list on the list, the family of the high-ranking officials and nobles will send people to guard the list, and when they see a talented and high-school scholar, they will invite him to the palace for a talk.
If the gentleman happens to be a bare stick, then give him a daughter or sister and marry him. The word "Denko" means to be on the gold list in the examination. Therefore, in ancient times, some places also called the wedding joy of the cave house flower candle "Little Dengke". Guo Yuanzhen was caught in this way, and was favored by a prime minister named Zhang Jiazhen.
Zhang Jiazhen was once deeply relied upon by Emperor Xuanzong of Tang and was quite popular in the court. Zhang Jiazhen had five daughters, all of whom looked like flowers and jade, and none of them were married at that time. Zhang Jiazhen had actually heard of Guo Yuanzhen long ago, and he had long planned to make him his son-in-law. Guo Yuanzhen's family is not very rich, and the money for the exam is all pieced together. Once, Guo Yuanzhen's family entrusted him with a little money for emergency.
Guo Yuanzhen had just taken the money from his fellow villagers, and when he turned his face, he met a beggar begging. Guo Yuanzhen immediately took out a little of the money in his hand and gave it to the beggar. After this matter was known to Zhang Jiazhen, Zhang Jiazhen praised Guo Yuanzhen and said that he was a truly kind person. Zhang Jiazhen originally wanted Guo Yuanzhen to be his eldest son-in-law, but the eldest daughter looked down on Guo Yuanzhen and hated Guo Yuanzhen's family as poor and unwilling to marry. And the second daughter also thinks the same as her sister.
Zhang Jiazhen's third daughter said that she did not dislike Guo Yuanzhen and was willing to marry him. But Zhang Jiazhen made a mistake. Because according to the ancient tradition, whether it is a wife or a husband, brothers and sisters should be ranked according to the line. The eldest brother marries his wife first, and only the younger brother can get married. In the same way, when the sister's first marriage, the sister is good to marry, there is no reason to let the eldest daughter and the second daughter not marry, and marry the third daughter first. This will definitely make outsiders talk about being a sister who snatched away the brother-in-law.
Zhang Jiazhen's third daughter is a very smart person, and she also fell in love with Guo Yuanzhen and decided not to marry. She came up with a good idea, both to marry Guo Yuanzhen in a fair and upright way, but also not to be discussed by outsiders. She asked Zhang Jiazhen to invite Guo Yuanzhen to the mansion, and then all five sisters hid behind the screen, one dragging a silk thread. The silk thread has five colors, and Zhang Jiazhen told Guo Yuanzhen that he would choose one of the five daughters.
Choose which silk thread, and the daughter who leads the silk thread will marry him. Guo Yuanzhen chose the red one, and out of behind the screen came a young girl who was Zhang Jiazhen's third daughter. This matter was rumored to be a good story, and no one talked about Zhang Jiazhen's third daughter, but said that she and Guo Yuanzhen were married to each other. Zhang Jiazhen's third daughter is leading a red line, so there is a saying of "leading the red line" in later generations. But in fact, some people speculate that no matter what color of silk thread Guo Yuanzhen chooses, the people who come out from behind the screen must be Miss Three. If Guo Yuanzhen chose a blue or green silk thread, it may now become a "blue line" or a "green line".