It was announced two days ago that Tokyo had entered the rainy season. Japan’s rainy season called “Tsuyu” or “Baiu” normally starts in June and lasts for about 40 days. During the period, we had a lot of rains, which sometimes cause a natural calamity such as floods or landslides. Many people in the cities do not like the season because they must bring portable umbrellas with them every day, but it is very important for farmers to grow rice plants. Besides, our bodies can gradually get used to the humidity, and then reach a hot and humid season of summer. The symbol of the rainy season in Japan is a colorful hydrangea.