Xiaodeng Island is located in Dadeng Town, Xiang'an District, facing Jinmen across the sea. Xiaodeng Island experienced wars, leaving forts and trenches and the original broadcasting site aiming Taiwan on the ground. There are criss-crossing tunnels under the ground and more than 1,000 meters of secret tunnels traverse the entire island. Xiaodeng Island not only has beautiful scenery, but also has profound ancient Tongan cultural heritage. The remains of the famous scholar Yin Qiu's hermitage are still there on the island.