On May 29th, students and teachers arrived at the Dule Temple, a historical monument located at the foot of Yanshan Mountain, one of the three surviving Liao Dynasty temples in China. According to the guide, Dule Temple was built in the beginning of Sui and Tang dynasties. The wooden structure of the building was built without a single nail and rivet, with all the beams and arches fitting together, and the eaves and teeth pecking in one piece. The fourth graders learned that Dule Temple is composed of ancient buildings such as the Mountain Gate and Guanyin Pavilion. What was most interesting and surprising to the children was that the mortise and tenon structure of the entire Guanyin Pavilion was like putting together Lego blocks. Even after a thousand years of wind, sand, rain and snow erosion and many earthquakes, the structure is still standing! The children marveled at the ingenious art and craftsmanship of Chinese architecture and felt proud of the ancient wisdom of the ancient Chinese. At the end of the tour, a small test allowed the children to quickly review what they had just learned about ancient architecture and to refresh their knowledge of the past.