Hong Taiji became the emperor in April 1636 and changed the name of his country from Later Jin to Qing. Envoys from Joseon who were at the ceremony refused to bow to the emperor. Although the emperor spared them, the Joseon envoys had to carry his message on their way home. It included denunciation of the past Joseon activities that were against the interest of Later Jin/Qing. The message also declared intention of invading Joseon unless they showed willingness to alter their policy by providing one of its princes as hostage.