During the Song Dynasty, there was a custom of "catching a son-in-law under the list", that is to say, some families with daughters, in order to be able to find a suitable partner for their daughters, whenever the results of the examination were issued, they would go to the place where the list was issued to bring some of the young people who were famous on the list back to their homes, so as to find a suitable son-in-law for themselves, which is actually a kind of "advance investment".

Because once the readers of the Song Dynasty passed the examination, then being an official was basically a matter of certainty, and the family with daughters at this time was to reflect the selection of "excellent stocks" so that their daughters could become "official wives", as it was said in the "Spring and Autumn", "Those who love their children will have far-reaching plans", and even some parents do not wait for the readers to take the meritorious name, but see their calligraphy and literary talents and marry their daughters, such as Wang Caicheng's father, Wang Dingcheng.
Wang Dingcheng had a good friend, named Huang Yunhu, who was a very famous official in the late Qing Dynasty, a 34-year-old scholar in the examination, quite smooth in his career, has always been a second-class official, paid great attention to protecting the rights and interests of the people when he was a local official, and repeatedly fought with Haoqiang in order to protect the people, which was called "Huang Qingtian" by the people.
In ancient Chinese history, there were very few officials who could be called "Qingtian", and officials such as Bao Zheng and Di Renjie, who were called "Qingtian", were naturally able to mix very well when Emperor Shengming was alive, but Huang Yunhu's luck was not so good, although he was on par with Bao Zheng in terms of morality and talent, but his status was far less high than that of Bao Zheng.
Because he has been cracking down on the powerful, it is inevitable to offend many powerful people in the dynasty, so that Huang Yunhu's official position is getting lower and lower, in 1891, Huang Yunhu resigned, and the following year with his 6-year-old son Huang Kan returned to his hometown in Hubei and began to focus on reading again.
However, at this time, Huang Yunhu was already full of learning and Confucianism, naturally it was no longer like when he was a teenager, in order to seek knowledge and go around to study, but as a great Confucian to teach learning everywhere, that is, "teaching", when Huang Yunhu was lecturing in his hometown in Hubei, he could reach "thousands of people, Xian su clothes, into the day without any uproar", there are thousands of people who listen to his lectures all day without moving, which shows that his learning is indeed smart.
Huang Yunhu not only lectured in his hometown of Hubei, in 1893, he was also invited by his friend Wang Dingcheng to go to Shanxi to give a lecture, when Wang Dingcheng was serving as a political envoy in Shanxi, he hoped that there would be a studious atmosphere under his rule, Huang Yunhu was also happy after receiving the invitation of his old friend, and he went for many days, and even did not know that there was no money in the family to pay for daily household expenses.
At this time, his 7-year-old son, Huang Kan, wrote a letter to his father in Shanxi at the request of his mother, with one theme: asking for money. However, although Huang Kan is young, he is already an out-and-out reader, and naturally it is impossible to be so explicit, he wrote a poem in the letter: "The father makes salt plum orders, and the family is indifferent to the wind." Reconcile the world's plans, and let the shafts be left empty? ”
This means that the father you have the world in mind, the family also understand and support, but can not let the family hungry because of the world, Huang Yunhu read this letter, Wang Dingcheng was right next to him, he glanced at the letter, found that Huang Kan, although only seven years old, but in calligraphy and literary skills have shown extraordinary achievements, so he said to Huang Yunhu: "Your son is very good, I want to marry his daughter to him!" When Huang Kan became an adult, he married Wang Dingcheng's daughter Wang Caiyu.