On July 2-4, Shizhen, Hongxing, Li Jun and I went to Guiyang to attend a task meeting of ATMSYC program. which was dedicated to the screening of hazardous air pollutants (HAPs) . Professor Fu Xuewu host the meeting. Professors Wang Youjie from Wuhan HUST joined with 5 students. We were able to meet Xu Yue and pay a short visit to Qingyan Ancient Town (青岩古 镇). The town was first built as a fortress in Ming Dynasty. A fruitful meeting and nice trip! Here are some pictures for archive.