As it was registered under Fourth Lady's name, it's considered legit.
Su Xinyi was not surprised, as it was the same in her previous life.
Since women were not allowed to enter the ancestral hall, Su Xinyi and the others waited outside. After their third elder uncle and others came out, everyone returned to the Third House for the formal banquet.
Su Xinyi spent some time getting to know dozens of people with Fourth Master Su, but in the end, she couldn't remember who belonged to which house, whether they were brothers or sisters, or aunts or uncles.
Mengyu found it hilarious. Just in their own branch of the family, there were almost twenty people, not to mention the other two houses and the more distant relatives. It would be strange if Su Xinyi could memorize them all so quickly.