Complex sentence: He regained his position as Director of Architecture at Tsinghua University, conducted more surveys on ancient architectural structures, completed his decades-long work, the "Annotated Yingzao Fashi", and he remarried, to a fellow Tsinghua faculty member Lin Zhu in 1962.
Split into simpler sentences: He regained his position as Director of Architecture at Tsinghua University, conducted more surveys on ancient architectural structures, and completed his decades-long work, the "Annotated Yingzao Fashi". He remarried to a fellow Tsinghua faculty member Lin Zhu in 1962.