The Brazilian presidential palace has announced that President Luiz Inácio Lula da Silva has been diagnosed with mild pneumonia today, forcing him to postpone his trip to China until Sunday. Lula da Silva was scheduled to leave for the Asian nation tomorrow morning, Saturday, on a visit aimed at strengthening relations with Brazil's largest export market, accompanied by a large delegation including several ministers, legislators, and 240 business leaders, more than a third of whom are from the Brazilian agriculture sector.