R(reporters): what did you do just now?
A: ah, it's our environmental protection activities. As for this activity, we should express our acknowledgement to you.
We were all surprised. What's the relation with us?
The aunt continued. Last summer, your Beishicao Middle School held an activity about protecting water resources in our village. In order to solve the pollution, the leaders in our village decided to launch an activity about using washing powder to exchange waste plastic bags. We want to foster villagers' conception of protecting environment through this activity.