A month later, she required the emperor's officials to formally petition her to make her nephew Lü Tai (呂台) Prince of Lü – carving the principality out from the Principality of Qi. Also, in the unprecedented and subsequently rare action of granting a female a march, in 184 BCE, she made her younger sister Lü Xu (呂須) Marchioness of Lingguang. In spring 181 BCE, Lü Tai's son Lü Chan (呂產), who had become Prince of Lü after his father's death, was given the larger Principality of Liang, but did not go to his principality but stayed in the capital Chang'an to serve as the emperor's teacher and assistant to Empress Dowager Lü. Later that year, the empress dowager made her nephew Lü Lu (呂祿) Prince of Zhao and another son of Lü Tai's, Lü Tong (呂通), Prince of Yan.