I remember the professor from
Augustana who suggested a trip to Yan’an, which was where the Communists fled in the 1930s from their bases in the interior–Kiangsi, Fujian, Szechwan–driven on the Long March by pressures from Chiang Kai-shek. I took the May Term 1996 class there, accordingly. 
We left from Xi’an, taking the long road through the loess landscape, still filled with troglodytes, though we could see the glare of TVs inside the caves. It was a long ride, but we stayed a few days in Yan’an, viewing the cave where Chairman Mao regaled Edgar Snow for Red Star Over China. As we had come to expect, the hardships of the 30s made for touristy opportunities for the 90s, including pictures in Red Army gear. Including one of Weidade Jiaoshou, the great teacher (one of Mao’s names for himself). I have pictures to prove we went elsewhere, such as Xi’an, Nanking, Shanghai, and Beijing, but the Yan’an visit remains the most vivid memory of the trip.