Complex sentence: From 2000 to 2001 Serdyukov served as a Deputy Chief of the Saint Petersburg Directorate of the Tax Ministry of Russia, from 2001 to 2004 he led the Directorate, succeeding Viktor Zubkov, his father-in-law.
Split into simpler sentences: From 2000 to 2001 Serdyukov served as deputy chief of the Saint Petersburg Directorate of the Tax Ministry of Russia. From 2001 to 2004 he led the directorate, succeeding Viktor Zubkov, his father-in-law.