For promoting the surveying and mapping technique, Professor Yang Ming, the Chairman of the Department of Geomatics at National Cheng Kung University and Professor Hwang Chein-way,the professor of the Department of Civil Engineering at National Chiao Tung University, were invited to make speeches at the National Land Surveying and Mapping Center (NLSC) on July 11, 2012. The topics are “Study of Height Modernization” and” Introduction of Hybrid Geoid Model”. New surveying concepts help to improve survey affairs.