On August 11-13, Shizhen, Gan, Junwen met Xu Yue in Guiyang on the 8th Conference on Environmental Geochemistry. It was really nice to see Xu Yue after seemingly a long time. Meanwhile we met many familiar faces in the circuit. Gan gave an oral presentation on radiocarbon in the atmosphere. After the conference, Xu Yue arranged a casual trip to the upper reach of Wujiang River (乌江源), which is very memorable.