3D model diagram

At noon, my mother said, "You close your eyes and I will give you a surprise."
I closed my eyes obediently, and when I opened it, it was a 3D model of a British twin bridge. I asked my mother: "Mom, how do you fight this thing?" Mom replied: "There is a manual inside, and you follow the instructions." After opening the wrapping paper, I was shocked. The parts inside were very complicated. Assemble the small parts one by one on the base.
Sometimes, there is a small mistake, how can the parts not fight, I am anxious to scratch my ears; sometimes it is difficult to fight, and was knocked out, I am not discouraged, re-assembled. In this way, I carefully assembled the parts in order, and a beautiful twin bridge was put together. Mother said: "Patience is the most important thing. As long as you have patience, everything can be done well."

Second grade of Guoxiao, Shengli Road, Xinhe District, Xinyang, Henan: Meng Xiyuan