About 30 minutes into your hike up Kinmen's highest mountain, you'll see a war-time message so important it was carved into a stone on a cliff in 1952. Wu-Wang-Zai-Ju translates as "Never Forget National Humiliation", and served to boost the morale of Kinmenese and soldiers. The iconic rock is a must-see for many Taiwanese tourists. It's on the Yuzheng Rd trail, a 10-min walk from the top of Taiwu mountain.Besides walking along Yuzhang Rd, there are 2 other ways to climb the 253-meter mountain: along Caicuo Ancient Trail, and the more physically demanding Duomen Ancient Trail which has climbing ropes.