On January 21-26, Liu Xin, Shizhen and Gan Zhang paid a fruitful visit to Hanoi of Vietnam. The group was invited by Professor Tu Mihn of VNU Hanoi. We were able to visit respectively VNU University of Sciences, Ministry of Natural Resources and Environment (VNU University of Natural Resources and Environment), as well as Vietnam Academy of Science and Technology (VAST). We had intensive discussions with our Vietnam collaborators including Prof Mihn, Drs Tri and Thang, with collaboration plans set up. In between of the academic visit, we were also able to visit the beautiful Halong Bay for a relax.