One common theme is survival. Given the difficult situation the cleaning lady is in, many fanfictions explore how she continues to survive and overcome various obstacles. Another theme could be family. Her relationship with her family and how she protects them is often a big part of the stories.
Yes, there are often some really engaging stories in The Cleaning Lady fanfiction. Writers might explore different relationships between the characters, or create new adventures for the main character. It can be exciting to see how they expand on the original show's concepts.
Here are some words to describe cleaning:
1. Clean the room/courtyard/kitchen/bathroom, etc.
2. Cleaning/cleaning/cleaning up/cleaning up trash/sorting out debris, etc.
3. Be conscientious/do one's best/spare no effort/be conscientious, etc.
expend a lot of time and energy/effort, etc
keep one's nose clean
It depends. Sometimes light cleaning to remove dirt or minor stains might be seen as a form of maintenance rather than full restoration. But extensive cleaning that alters the original appearance could be considered restoration.
In the Hong Kong drama "Love to Come Home," the cleaning lady was fired for writing on the mirror in episode 18. In that episode, the cleaning lady accidentally wrote some words on the mirror when she was cleaning the toilet due to the heavy workload. This caused the employer to complain and was eventually fired by the company.