Yan Yu clearly pointed out in Cang Hua that Li Bai's poems are bold and detached, forming a unique elegant style. He praised Li Bai's poems and songs for their imaginative and lofty aspirations, and expressed his pursuit of a free and unrestrained life. This view can be supported, because the common elements in Li Bai's works, such as whistling in the sky and wandering in waves, do show his open-minded and bold temperament.