In 1354, Charles crossed the Alps without an army, received the Lombard crown in St. Ambrose Basilica, Milan, on 5 January 1355, and was crowned emperor at Rome by a cardinal in April of the same year. His sole object appears to have been to obtain the Imperial crown in peace, in accordance with a promise previously made to Pope Clement. He only remained in the city for a few hours, in spite of the expressed wishes of the Roman people. Having virtually abandoned all the Imperial rights in Italy, the emperor re-crossed the Alps, pursued by the scornful words of Petrarch, but laden with considerable wealth. On his return, Charles was occupied with the administration of the Empire, then just recovering from the Black Death, and in 1356, he promulgated the famous Golden Bull to regulate the election of the king.