After 1949, Lin Huiyin became a professor of architecture at Tsinghua University. As a literary writer and architectural historian, Lin Huiyin rebuilt the capital from the aspects of cultural tradition, architectural beauty, historical significance, and living conditions of the people. Meanwhile, Lin Huiyin participated in the design of the "National emblem" and the "Monument to The People's Heroes". Lin designed the floral wreath patterns at the base of the Monument to the People's Heroes. Lin also took part in the standardization of Beijing city planning.