Today, our school organized our primary school to visit the five-year World Expo. At half past eleven, we set off on time, and the students boarded the bus and set off. On the bus, some students are closing their eyes; Some are eating snacks; Some are talking and laughing; Others are enjoying the scenery outside the window ... With the opening of the car door, we finally came to Gate 7 of the Expo Park.

We first came to the "Hungary" pavilion. Hungary Pavilion is a log-colored building, wrapped in a wooden cover, bright and simple. In the museum, nearly 600 wooden covers are hung vertically in the air, some of which swing up and down with the rhythm of music, just like walking in the forest. However, what interests visitors most in the Hungarian Pavilion is a mathematical model-Gonboots. Boots is the first homogeneous object in the world with only one stable equilibrium point and one unstable equilibrium point, which symbolizes harmony and balance.

Then, we came to my favorite "Britain" pavilion. The British Pavilion is a seed "temple", which itself consists of about 60,000 slender transparent acrylic "tentacles", which extend outward and sway with the wind. During the day, each 7.5-meter-long tentacle will conduct light like an optical fiber and provide internal lighting, thus creating a bright and solemn sense of space. At night, the light source contained in "tentacles" will make the whole exhibition hall emit bright and charming light and shadow. When people enter the exhibition hall, they can see one "tentacle" inserted into the exhibition hall, and the top of each "tentacle" is embedded with different kinds and shapes of plant seeds. Visitors who leave the Seed Temple will enter the last corridor, the "City of Vitality". There is a "plant river" dancing in this vibrant city. This "plant river" flows out from a huge crack in the ceiling, and plant life spews out from here and enters the corridor. The "Plant River" shows all kinds of plants growing along the gap in the ceiling, which is the fusion of present plants and future plants. Visitors can observe closely which are real plants and which are models. We also watched "Artificial Art" on the artificial grass outside.

Finally, we came to the "home of German and Chinese colleagues". The top of the whole "German-Chinese Walking House" exhibition hall is supported by 96 Yulong bamboos, each of which is 8 meters high and more than 22 centimeters in diameter. Visitors can personally experience the "interactive city building" game of "German-Chinese Walking House". The outline of urban buildings in the game corresponds to a lot of digital information, including many achievements related to the theme of "Germany and China", including energy, transportation, water resources, population growth and so on.

Good times are always short. Suddenly, I'm going back to school. Looking at the night view of the Expo site, I reluctantly got on the bus.