As for the bath in bath purification, it is its metaphorical meaning.
There are two metaphorical meanings: one is suffering; Be moist. Biography of Historical Records and Le Shu: "No one can do this without great virtue!" Liu Tang Zongyuan's Answer Sheet for Jingzhaofu: "Those who bathe in Hongze dare to cherish their peace of mind; People who are loved by the emperor don't know how to sleep or eat. " The poem "Send Zhao Yuzheng to Guangxi" in the Qing Dynasty wrote: "Although Blackpool is a barbarian, he bathed the emperor for 300 years." Selected Works of the Ten Years before the Revolution of 1911: New Guangdong: "Today, Manchu people have been bathed in Han culture for a long time." Bathing means bathing in purification.
The second is to immerse yourself in an environment. Han's "On Balance and Tired Harm": "A husband is ashamed of his nature, has evil in life, is vain in swimming, and is tired in bathing. How can it be called!" Luo Song Dajing's "He Lin Yu Lu" Volume 15: "Let Gong Jing go from Lianxi and bathe in the wind to eliminate his eccentricity." Ye Shengtao's "Ni Huanzhi" X: "In this sound of gongs and drums, the whole town completely forgot everything and only felt as if they were bathed in a sea of joy."