On the first night Liu Da and Liu er came to Wang Shunzi's house, Liu er had eavesdropped on Wang Liushi and Wang Siyun's conversation.
Wang Liushi wanted Wang Siyun to be the second wife of a wealthy family in the capital. That family was in the gold and equipment business, and their house was full of gold. There were also relatives who were officials in the court. Wang Liushi was very tempted, and so was Wang Siyun.
The two of them understood Liu er's intentions and were discussing how to get rid of him.
The mother and daughter's idea was to let Wang Siyun take Liu er to the back of the mountain the next day, and then call the children at home so that they would not have to worry about the man and woman being alone.