Xiao Wei and the others still don't know about their sister's situation. He thought he should be living happily now, but how could he have imagined that in this short period, his sister went through so many accidents, one after another, leading her to become erratic and unable to differentiate right from wrong, even struggling with the simple act of eating. If he knew, he would probably be deeply pained, as she is the sister who has been by his side for many years.
He has always wanted to return to the country to be with his sister, to see how she is doing now, but he has been held back by his wife. He couldn't let his wife be disappointed; he knew what she expected of him.
