First, the downfall of starting a family is temporary. Even if it is down and out, it is still a giant. As you can know from the old lady, starting a family grew up in the palace and is very friendly with the queen mother. Many respected mothers in the palace are the old lady's handkerchief. This status alone has surpassed many people, so in fact, they are looking at the old lady's face in many ways, and the father who started a family is a flower lang, although it is never finished.
Second, the Wangs will decline sooner or later. Whether a family will prosper in the future depends mainly on its children. For example, children in Yi Sheng have great potential. The Wangs have declined at this time, and the ancient families are interdependent, and they also need to rely on the Sheng family to persist.
In fact, in ancient times, there was no clear requirement for the eldest son's concubine. For example, it is difficult for concubines of small families and aristocratic families to plan their status.
Third, illegitimate children are different from illegitimate children. Although Shengji is an illegitimate child, there is only one son in their family now, which means Shengji is the sole heir of the family. At this time, there is no need to see that humble bastard, who is more noble than some well-born Di Zi. Sometimes it depends on his own talent. For example, although Ming Lan is an illegitimate daughter, he is more popular with his elders than Moran, who is also an illegitimate daughter.