Why did Koko go crazy in front of the mansion?

Bai fell in love with Tong Yue when he was young, but due to the secret obstruction of his parents, he finally missed out on true love and became mentally ill. In the later period of my life, I was unhappy, unhappy. In the end, my sister Bai Hui made me sick, cut my mother and sister with a knife, and died with regret.

In the anti-Japanese parade, Bai accidentally saved the seriously injured child. In the process of taking the child home to take care of it, the two young men and women quickly sparked a spark of love. When Tong Yue woke up, they had tasted the forbidden fruit. But Tong Yue had to go back to the front to continue his work. When he left, he promised to come back and marry Bai Mei. At this point, Bai Mei was happy and satisfied.

But her parents suddenly cut off her happiness, even forged her handwriting and wrote a letter to Tong Yue saying that she was married. And Tong Yue believed it and really didn't contact her again. At this time, Bai Liren felt pain for losing happiness and was angry with her parents' behavior after learning the truth. To make matters worse, she was pregnant with a child, who was doomed to have no father.

Stimulated by several emotions, Bai completely collapsed. Under this stimulus, she found a knife and cut her mother.

Extended data:

Bai Mei had to hide in Taiwan Province Province, quietly gave birth to the baby, and then came back alone.

After a long time, she slowly put down her children and met the second man she liked. She was about to get back into a relationship, but her sister ruined it for nothing. As his sister, even when he took his new boyfriend to grandpa's birthday party, he said he was crazy. This feeling of being stabbed by relatives made Bai Mei collapse again. At the wedding, she raised a knife and cut her sister.