This is the free study of summer vacation! Let's go to "Sewer Exhibition '19 Yokohama'"!

　We will exhibit Yokohama City booth at "Sewer Exhibition '19 Yokohama" hosted by the Japan Sewerage Association. The Sewerage Exhibition is the largest exhibition in the industry that introduces the latest technologies and equipment related to sewerage and is held every year in various places, and is the first time in Yokohama in 11 years. At the Annex Hall exhibited by Yokohama City, elementary school students will introduce sewerage and environmental improvement initiatives in an easy-to-understand manner.
　At the Yokohama booth, there are plenty of contents that touch the sewer while having fun, such as a craft corner and a photography corner, as well as preparing for heavy rain and earthquakes. Participants in the quiz rally will also receive a wonderful novelty!
　Everyone who is in trouble with the theme of free research. Why don't you take the theme of the underground "sewerage world" that is usually invisible? ？