Qingshui Dayang Oil Depot

In the 1950s, Taiwan and the United States signed a mutual defense treaty. According to the treaty, the existing Gongguan Airfield was expanded and named "Ching Chuan Kang" (CCK) Air Base, in honor of the anti-Japanese hero General Chiu Ching-chuan. It was then the largest air force base in the Far East. With the outbreak of the Vietnam War in 1962, the US military, to support operations against North Vietnam, stationed C-130 Hercules transport aircraft in Taiwan, using CCK Air Base as a logistics hub. In 1966, seven oil depots were constructed in Yangcuo Village, Qingshui District, near the base, to supply fuel for American fighter jets and B-52 bombers. Following the end of the Vietnam War and the severance of diplomatic relations, this location gradually lost its significant military importance. The Dayang Oil Depot is now the only remaining historical structure, a colossal relic standing on the Dadu Mountain Terrace, bearing witness to the cultural background of the US-Vietnam War.