Many of Cai Sixiu's sisters were from other places. After they got married, they didn't have a good relationship with their husbands. They usually bought several houses for themselves so that they could have a safe place to live and find a way out in the future.
Moreover, Li Muyao was a girl from another city. To be able to buy a house in Sun City meant that she already had plans to settle down.
That was why he needed a career of his own.
Therefore, Cai Sixiu actually quite supported Li Muyao opening her own shop. Even if she didn't have a fixed boyfriend like Cai Sixiu in the future, or changed boyfriends every few days like Cai Sixiu's sisters, those were not a problem.
