 In May 1846, Amaral demanded that all Chinese residents in Macau pay ground rent, poll tax and property tax, which broadened Portuguese rule in Macau over the Chinese residents.The Qing authorities in Macau immediately protested against Amaral's action and attempted to negotiate.However, beginning in 1849, Amaral expelled all Qing officials from Macau, destroyed the Qing Customs office and stopped paying ground rent to the Qing government.