Wei put her under house arrest. Zu, further trying to ingratiate himself with Lady Lu, suggested that Lady Lu be made empress dowager (under the precedence that the predecessor dynasty Northern Wei's emperors often made their wet nurses nurse empress dowagers), going as far as suggesting that Lady Lu was as great as the female deity Nüwa. Lady Lu in turn praised Zu as "the Master Statesman" and "National Treasure." (However, Gao Wei never actually made Lady Lu empress dowager.) By summer 572, both Zu and Mu Tipo were in conflict with Hulü Guang. Hulü disliked Zu, and he often complained to his generals that Zu rarely consulted military generals. Once, when he was resting at a governmental building, Zu, who was blind, rode past him without realizing that Hulü was there, and never got off the horse as demanded by customs of the time. Hulü angrily stated, "Who does he think he is?" Zu, realizing that Hulü disliked him, bribed Hulü's servant and asked the servant about Hulü's opinion of him. The servant stated, "Ever since you came into power, the Minister Prince each night sighed and stated, "With a blind man in power, the empire will surely be destroyed." Meanwhile, Mu had once requested to marry Hulü's daughter by a concubine, but Hulü refused. Further, when Mu requested that Gao Wei grant him the public fields at Jinyang, Hulü publicly opposed the action as being detrimental to the grazing of the army's horses. Zu and Mu therefore both despited Hulü. They therefore fostered suspicion of Hulü in the emperor's mind, and that suspicion was exacerbated by the fact that Hulü's daughter and Gao Wei's wife Empress Hulü was not favored by Gao Wei. At the same time, the Northern Zhou general Wei Xiaokuan, wanting to try to exploit Gao Wei's suspicions, decided to try to create a sense that Hulü would rebel. He wrote two songs in couplets, one of which read: A hundred sheng [(升, a measurement unit -- and 100 sheng made up one hu (斛))] will fly up to the heavens, A bright moon [(明月, mingyue, Hulü's courtesy name)] will shine over Chang'an [Northern Zhou's capital]. The other read: The high [(高, gao)] mountain will collapse on its own, The daimyo oak [(槲, hu)] will stand straight on its own. He sent spies to spread the songs near the Northern Qi capital Yecheng (鄴城, in