How did Xiao Bai, the ex-girlfriend of Roi in If You Are the One, die?

The ex-girlfriend's husband is very violent to her and wants to borrow a tour group to stay abroad. He happened to meet Roi and fell in love with him, so he told Roi that Roi wanted his partner to help him, and the partner contacted the head of the group. If there are fewer people in the group, the group leader will be punished and so on. The partner of Roi betrayed Roi in order to have these businesses in the future, but the head of the group took care of Xiaobai, leaving Xiaobai with no other chance to escape. He thought he would be punished by another person. Wrong! The rest is that everyone has a little regret, and fate plays tricks on people!