Introduction to the Ming Dynasty model: The Yueyang Tower of the Ming Dynasty is based on the "Yueyang Tower" painted by the Ming Dynasty court painter An Zhengwen collected by the Shanghai Museum. The model is hexagonal in plane, 1.86 meters wide on one side, 4.5 meters high, and has a net weight of 9.1 tons. The plaque was written by Dong Qichang, a calligrapher of the Ming Dynasty.