Firm's year-on-year figures reveal 66.39 percent increase in revenue

China Vanke Co Ltd, the nation's largest real estate developer by sales, has posted a significant drop in April revenue from March, in a clear sign that the government's efforts at curbing housing prices have started to affect major developers.

Its revenue fell 18.55 percent month-on-month to 12.38 billion yuan ($2.01 billion) in April, it revealed in a filing to the Shenzhen Stock Exchange.