 In 1749, the Qing government issued a complete set of guidelines for Portugal's administration of Macau and carved the Portuguese version on a stela in the Edifício do Leal Senado.However, the Governor of Macau, the representative of Portugal, gradually took over the power of the Senado.When the Treaty of Nanking was signed in 1842 between Britain and China, the Portuguese government requested the Qing government to exempt them from the ground rent.