C14 Revenge

When Rann Shuang returned to the courtyard, she quickly filled the water vat with water buckets, leaving only an empty vat. She then slept in the four-sided pavilion. It was only when she heard movement the next morning that she got up and filled the last vat with water.

She deliberately pretended to be physically weak when the eunuch came forward to check and slowly filled the vat with water