The reason why Yan Yan put forward this suggestion was based on two considerations, one was to follow the example of the later Ming Dynasty to build a pass and the Great Wall in Yuguan, which is the famous Shanhaiguan; The second is that this piece of land is close to the sixteen states of Yanyun, and the aboriginal Han people are the majority, even if they are not Han people, they are basically sinicized, and it is easy to manage after being recovered.

In addition, Yan Yan felt that as Yelu Honglu's traverser, he must also know this history, and should agree to use Shanhaiguan as the boundary, after all, once this pass is repaired, he is equivalent to removing the worries of the Great Zhou, and can concentrate on dealing with Mongolia and the remnants of the Jurchen tribe.

Li Cong listened to Yan Yan's proposal and studied the map for a while, without saying anything, Yan Yan guessed that he must be thinking of bringing Liaoxi over, so he didn't say anything more.

She also understands the importance of the Liaoxi Corridor, let alone Yelu Honglu, so he may not be willing to give up this place.

Li Cong looked at the map for a while, turned around, and saw that Yan Yan was also staring at the map on the wall in a daze, and after thinking for a while, Li Cong changed the topic and talked about Li Xi and Lu Jin's family affairs.

It turned out that the filial piety period of him and Li Ji had passed, and the royal family could do happy events, so he ordered Si Tianjian to choose a good day to officially propose to the Lu family.

"Huh? Haven't you already exchanged Geng posts? Yan Yan was slightly surprised.

According to the royal rules, it is basically who you like, and the woman's Geng post will go over to find Si Tianjian's people, and if there is no problem, the queen mother or the queen will issue an edict to the woman's parents, and this family matter will be decided.

And the royal family has already asked for Lu Jin's Geng post before, and the emperor also promulgated this will in the court, this family business is a certainty and there is no possibility of change, in this case, what do you want to do with Si Tianjian's day?

"It's just an exchange of Geng posts, three books and six ceremonies, how can it save trouble? Li Xi has also reached the year of bundling his hair, I mean let them be engaged this year and officially marry next year, what do you think? ”

Yan Yan saw that the other party would discuss the children's family affairs with her as an ordinary parent, and guessed that he must be looking at Lu You's new merits to give them a gift to the husband and wife.

The opportunity was rare, Yan Yan raised his head and asked cautiously, "Uncle Hui, can I make a few requests?" ”

"Naturally." Li Cong guessed what Yan Yan was going to say, and at this time, he suddenly regretted that he shouldn't have given Yan Yan this opportunity, but he had already said it, and there was no reason to regret it on the spot.

Yan Yan saw that the other party suddenly sat up straight, and his face unconsciously carried a bit of imperial anger without anger, pondered for a while, and said: "Back to the emperor, it is a little early to get married next year, next year Jin Niang will only be thirteen years old, and she is not yet a young man, and pregnancy and childbirth at this age are quite dangerous for both adults and children, and it is not conducive to the development and growth of the emperor's grandson." Another point, I think the way of husband and wife is to be sincere and honest, if there is any problem, can they be allowed to solve it by themselves, adults should not interfere, let alone impose the wishes of adults on children. ”

"I understand the latter point, that is, let us be the elders and leave them alone with the husband and wife, but what does the first point mean, my Great Zhou law stipulates that a woman can marry at the age of thirteen, and since ancient times, there are many women who have become biological children at the age of thirteen, why do you feel dangerous alone? Also, I got married at the age of sixteen, didn't I have so many children? Seeing that Yan Yan did not bluntly propose that Li Xi was not allowed to marry Xiao, Li Cong unconsciously relaxed himself and quarreled with Yan Yan.

"Then may I ask if the emperor's first child survived?" Yan Yan asked.

Li Cong shook his head, not only the first, but the first two children did not survive, but he didn't think much about it at the time, because the survival rate of children in the palace has never been high, and getting sick is one thing, and there are many people who have been manipulated.

Although Yan Yan didn't know about Li Cong, she knew that Li Ji also got married at the age of sixteen, and the princess was fourteen years old that year, so their first child was not saved, and it was a direct miscarriage.

Without waiting for Yan Yan to ask, Li Cong also thought of Li Ji, and naturally thought of the miscarriage of the crown princess.

Could it be that all this is not man-made, it is really an accident, and it is still an age-related accident?

"But the imperial doctors didn't say that you can't get married or have children at this age?" Li Cong believed Yan Yan's words a little, but felt that there was no convincing basis.

"Not only the law of the Great Zhou, but also the previous law of the Tang Dynasty was set at the age of fifteen for men and thirteen for women to marry. Moreover, no matter which dynasty is inseparable from war, nor can it be separated from natural and man-made disasters, therefore, it is more necessary to have the continuation of heirs. In other words, getting married early and having children early is in line with the needs and wishes of the imperial court, which imperial doctor dares to oppose it? ”

Yan Yan originally wanted to use the average life expectancy of this time and space as an example to illustrate the necessity of early marriage, but he was afraid of touching the sensitive nerves of the other party, so he changed his rhetoric.

Li Cong quickly understood these words, because when the war was tense in those years, there was indeed a shortage of people in the Great Zhou, especially the lack of young and middle-aged men, for this reason, some people at the court meeting proposed whether it was possible to advance the age of a man's marriage by one or two years, but this proposal was not passed at that time, and the reason seemed to be that it was in vain to advance the age of marriage and have no fertility.

In other words, normal men generally have the ability to have children until the age of hair binding, but if they are fertile, why do they give birth to unhealthy children?

Also, isn't it a woman's responsibility to not be able to give birth to a healthy child? How can you blame a man?

Li Cong wanted to ask clearly, but he thought that Yan Yan was not a doctor, and most of them knew what it was, so he changed the question, "Then how old do you think you should be married?" ”

"It is better for men to be in the age of the weak crown, and for women to be in the age of the queen."

Li Cong shook his head, "Five years can decide a lot of things. ”

Yan Yan understood the meaning of this, the medical conditions in this time and space are too poor, the mortality rate is too high, if the age of marriage is hastily postponed for five years, it will definitely affect the fertility rate.

"Personally, I think the age of marriage for the general public is good, the vast majority of men in the Great Zhou choose to marry at the age of seventeen or eighteen, and women are after the age of Xu, so it's good, and there is no need to change the law." Yan Yan took a step back.

Li Cong listened to the silent calculation, that is, to push it back for two years, it would not affect anything, and the most important thing was that he didn't have to deliberately revise the law, and he didn't have to offend Yan Yan, so he nodded.