There’s a hidden switch on the washing machine; simply turn it on, and dirty water will drain immediately.

To pry open this lid, use a coin and you will see dirty water flowing out. Additionally, you should also clean the rectangular filter box on the inside of the washing drum. Because if you do not clean it regularly after a period of use, a lot of lint will stick here, making clothes easily dirty after washing. So, it is best to remove this filter box every week to clean it.