What are the characters of Cenfuzi and Dan Qiusheng in Li Bai's poems about drinking?

Cen Can and life is unknown, friends of Li Bai, a poet in the Tang Dynasty, appeared in Li Bai's poems many times and were also famous for their association with Yuan Danqiu, a famous hermit. Later, he lived in seclusion in Gaoming Mountain. Li Bai is unrestrained, romantic and imaginative. Li Bai is a famous poet, and there is a saying that there is no poem without wine. He often invited his confidant friends to pour out their worries and express their boredom and frustration in officialdom with calligraphy, and the darkness of the imperial court was thus displayed in front of the world! Li Bai once mentioned Yule in his poems, such as Sending Cen Zheng Jun to Gaoming Mountain, Rewarding Cen with Poems and Seeking Yuan Danqiu to Treat Wine, and Entering Wine. The famous "Master Cen, Dan Qiusheng, will have a drink and never stop drinking" means that the three of them become bosom friends!