C84
The moment Xi Jiu'er returned to the courtyard, he saw Liu Shui walking over with a weird expression and whispering into her ears. "Xi Tang Jun and Yun Juan are doing stuff in the house." Her voice just happened to be loud enough for Xi Jiu'er to hear.
The reason was simple. ex-sister-in-law went to the shop to help her take care of the business, without a servant