Prince of Zhao
In 181 BC, after Prince Heng's brother, Prince Liu Hui of Zhao, committed suicide over his marital problems, Grand Empress Dowager Lü, who was then in effective control of the imperial government, offered the more prosperous Principality of Zhao to Prince Heng, but Prince Heng, judging correctly that she was intending to make her nephew Lü Lu prince, politely declined and indicated that he preferred remaining on the border. The grand empress dowager then made Lü Lu Prince of Zhao.