sentences:  As was later true for Chiang Kai-shek's government, the taxes were collected via opium suppression offices, ostensibly created to destroy the trade.In 1932 opium income amounted to fifty million dollars, the largest source of income in the provincial budget.During the Northern Expedition, Bai Chongxi was the Chief of Staff of the National Revolutionary Army and led the Eastern Route Army which conquered Hangzhou and Shanghai in 1927.