Complex sentence: Two years later, after the military government was disbanded, replaced by Sun's Nationalist government, also in Guangzhou, Cen announced his resignation in a telegraph and spent the rest of his life in retirement in Shanghai.
Split into simpler sentences: Two years later, the military government was disbanded and was replaced by Sun's Nationalist government. Consequently, Cen announced his resignation in a telegraph and spent the rest of his life in retirement in Shanghai.