Introduction to the stone bridge: The stone bridge in Longji Ancient Zhuang Village uses a whole piece of natural bluestone as the bridge deck, without piers, and the length depends on the span of the stream. This bridge was built around the Tongzhi period of the Qing Dynasty. It has a span of 6 meters and is paved with two whole natural bluestone slabs with a length of 8 meters and a width of 0.8 meters. It is the oldest existing bluestone bridge in Guangxi and the longest stone slab material. It is also rare in the country.