Gaius Sallustius Crispus Passienus be the end of Agrippina's villainy, for Claudius' wife, Messalina, correctly perceiving the threat from Agrippina, attempted to have Lucius assassinated, in order to ensure the succession of Britannicus, her own son by the emperor. The attempt failed, and, after procuring Passienus' death, Agrippina worked to bring about the downfall of Messalina. She then seduced her uncle, the emperor, becoming his wife, and persuaded Claudius to adopt Lucius, naming him his heir in preference to his own son. Agrippina then procured the emperor's death, placing her son, now the emperor Nero, on the throne; he soon disposed of Britannicus. Agrippina
Emperor Xiaojing of Eastern Wei do her husband harm, kept close watch on her husband, often tasting his food to make sure that it was not poisoned. However, Emperor Wenxuan was apprehensive of the former emperor. Around the new year 552, Emperor Wenxuan invited the Princess Taiyuan to a feast inside the palace. As soon as she left her residence, Emperor Wenxuan sent assassins to force the former emperor to drink poisoned wine, and also killed his three sons. Emperor Wenxuan gave the former emperor the posthumous name of Xiaojing, and also buried him with imperial honors. However, at a later time, for reasons unknown,