Why did Yi Zhongyu, a mean and domineering heirloom, become an "enemy" with the whole family and put on a hedgehog coat for herself?

In the play "Family heirloom", there is a prominent figure, that is, the role of Yi Zhongyu played by Wu. She is an annoying person at first sight, because she looks mean, overbearing and rude, and it seems that he has no face for his family. It seems that he and his family are like enemies, and they don't care about their feelings when talking to them.

First of all, it may be because of his mother. Because in fact, she has a lot of dissatisfaction with her father, stepmother and her two children, because his mother was a mistress in the family, and now Xiaosan has hooked up with his father, and she used to be her sister's tutor, so to some extent, in Yi Zhongyu's heart, she thinks that their family killed his mother and ruined his family. He thought the arrival of his family was out of place.

Secondly, because she is actually a very sensitive person at heart, she protects herself in this way. Because she is a helpless person at home, her mother has long died, and her father has not lived with her for a long time, so she will protect herself in this way and means, just like a hedgehog, that is, not to let others hurt her. In particular, she has been in Singapore for a long time, and when she returns home, she will feel that all people are strangers and have a kind of hostility towards them for no reason, so she puts on the coat of hedgehog.