In Taiyuan, the provincial capital, I was told that a new field of high-quality coking coal was being developed in Gujiao, 56 kilometers away.…This was intriguing, and I left for Gujiao by bus, accompanied by a comrade from the provincial coal bureau. We first crossed the Luliang mountains, 1,800 meters above sea level. In the valley, a 47-kilometer electric railway has been built, running through 18 tunnels and over seven bridges across the winding Fenhe River.