The Tongji Bridge () in Wucheng District, Jinhua, Zhejiang, China, is a large stone arch bridge. "Tongji Bridge" ("Tong" means transport/transportantion, "Ji" means aid or cross a river) is a very common name for bridges in ancient China. The bridge has a nickname "The Big Bridge of Jinhua" (traditional Chinese: 金華大橋, simplified Chinese: 金华大桥, pinyin: Jīn Huá Dà Qiáo), because of its large size. And it is one of the largest ancient arch bridges in Zhejiang. The bridge goes across the Wu River (婺江), and has a total history of more than 600 years. History The bridge has a long history. At beginning it was a wooden pontoon bridge. However, the bridge was often destroyed by floods during rain seasons. In the fourth year of Dade (traditional/simplified Chinese: 大德, pinyin: Dà Dé) Era in Yuan Dynasty, a Buddhism monk named Ji'an (traditional/simplified Chinese: 及庵, pinyin: Jí'ān) from Xifeng Temple (traditional/simplified Chinese: 西峰寺, pinyin: Xī Fēng Sì) in suburban Jinhua suggested building a stone bridge, and he also help raise funds for the construction. The first phase of construction lasted for five and a half years until the death of Ji'an. Eleven stone piers of the bridge were finished but the construction of its upper structure was stopped due to the death of Ji'an. After many years, another monk, from the same temple, named Yunlong (traditional Chinese: 雲龍, simplified Chinese: 云龙, pinyin: Yúnlóng) who was the head of the temple at that time, came and continued Ji'an's job. In the second year of the Yuantong (traditional Chinese: 元統, simplified Chinese: 元统, pinyin: Yuán Tǒng ) Era (year 1334) of Yuan Dynasty, the bridge was eventually finished. It was a covered bridge with Buddhism characteristics. It had 50 rooms on the bridge for the statues of a series Buddhism gods (Buddhas), including the Four Heavenly Kings. Its piers were made of stone and remain now. Its upper structures were wooden, with roofs and tiles to prevent raining and snowing. The average height of each pier above then water level was 41 chǐ, according to the historic record; and the bridge deck was 8 chǐ above then water level of the river. The total length of the bridge was 780 chǐ, which shows it was a very large bridge during that time in the world. The watercut design and structure were applied to the piers of the bridge, to minimize the friction of