Two stone tablets, one of which is "the story of building a stone weir in one city", are written by Shang Lu, a soldier, a household and an official in the Ming Dynasty, and by Li Yingzhen, a famous calligrapher in the Ming Dynasty. The first pass is the monument of "Tongli Port City Weir", which was inscribed by Wan 'an, Minister of Ming Dynasty, and Fan Fushu, Minister of Foreign Affairs. This paper records the reasons, site selection, materials and construction technology of rebuilding the dam in Ming Dynasty, and points out that the dam is a famous water conservancy construction project in ancient times. The inscription shows that in the seventh year of Yuan Xianzong (1257), in order to prevent the Dawenhe River from flowing down, the Gangcheng Dam was built from the Guanghe River to facilitate water transportation. In the early Ming Dynasty, the dam was rebuilt and the riverbed was re-selected with hard rocks. The dam was filled with gravel and lime and was completed the next year. This project has played a great role in prospering north-south waterway transportation and irrigating farmland in southwest Shandong in history.
Before and after the Wang Yu Temple, there are more than a dozen ancient cypresses over one thousand years old. The plants on the right side behind the temple are not only tall and vigorous, but also stand out from the crowd. In the southeast, there is a giant branch like a dragon, looking at Zhang Yi. The dragon's beard is fluttering, just like walking on clouds, trying to fly. In the sixteenth year of Shunzhi in Qing Dynasty (1659), the story of rebuilding Wang Yu Temple wrote: "There are cypresses in the courtyard, but there is no sunlight, and there are dragon-shaped trees behind them for hundreds of years." Therefore, the ancients called it "enlightening wisdom and starting from scratch". Chronicles of Ningyang County are regarded as one of the eight scenic spots in Ningyang. Wang Yu Temple is a provincial cultural relic protection unit and an excellent historical building in Shandong Province.