It was said that Yao was experienced and quick in his reaction, and that he had great knowledge of military matters. It was also said that he, more than other chancellors, took much effort to take responsibility for important matters, and thus was well-trusted by Emperor Xuanzong, who delegated the matters to him. (However, the biographies of other chancellors and key officials at the time also suggested that Yao was jealous of them and took actions to remove them from power by making false accusations against them—including Zhang, Liu Youqiu, and Zhong Shaojing, accusing Zhang of improper association with Emperor Xuanzong's brother Li Fan (李範) the Prince of Qi and accusing Liu and Zhong of complaining against Emperor Xuanzong for not giving them more important positions.) Around that time, Yao also stopped using the name Yuanzhi—initially changing back to Yuanchong, but then, because Emperor Xuanzong's era name was "Kaiyuan", removed "Yuan" from his name and went by the name of Chong. Emperor Xuanzong also made him again the head of the legislative bureau (now with the title "Ziwei Ling" (紫微令), with the bureau itself renamed "Ziwei Sheng" (紫微省)).