In Yan Liqiang's previous life, oil was no doubt the most precious commodity in modern society. Oil was the blood of the modern world's economy. It was the source of wealth and foundation of industries. Without oil, society as a whole would come to a halt. In Yan Liqiang's previous life, oil was often connected to the status of the country's economy, influential families, and secret groups. It not only brought about massive wealth, but it also caused countless wars, joys, and separations. Countries fought over oil all the time. There was an old saying from an 'old friend' of China — Henry Alfred Kissinger once said, "Whoever controls oil controls the world."