Financially supported by Chinese Academy of Sciences (CAS) President's International Fellowship Initiative (PIFI) for 2018, and invited by Prof. Junhu Wang, Prof. Franz Renz (Leibniz University Hannover, Germany) visited the Mössbauer Effect Data Center (MEDC) from 21 July to 13 September, 2019, for carrying for a joint project “In Situ Extraterrestrial Mineral Studies Using Mössbauer Spectroscopy”