We laughed and laughed all the way by car to the gate of Qingdao Water Conservancy Science and Technology Center. Teacher Xin told us to line up and go in in an orderly way.
Wow! It's so clean here! I thought to myself, indeed, this place is spotless. The staff here let us watch a short video first. Although the time is short, we can understand the hard work of those staff. Whenever we have a rest, those workers will run around to check the water meter, repair the pipes and so on. After watching the video, the staff showed us all the floors. Although there are only seven floors, I have learned a lot. For example, we know how water is delivered to thousands of households. We also know that if someone comes to do an experiment and says that the water used now is not clean, we can't trust him.
After the visit, we drank the water there, which was cool and sweet. We reluctantly left a message and got on the bus and went home.