“The purple cloud from the east” refers to the story of Laozi leaving the city by the western pass, Hangu Pass. According to legends, Li Er, also known as Laozi, wanted to live as a hermit. He was going to leave the city by Hangu Pass and then go westward. Yin Xi, the guardian of the western pass, saw a purple cloud coming from the east the day before. It was a sign indicating that a saint would pass by. He had been waiting respectfully all day long. As expected, Laozi, on the back of a green buffalo, was coming to the pass. Yin Xi treated him with great hospitality and asked him to give lectures and to write down his wisdom in books. He even followed Laozi and they left Hangu Pass together. In the end, both of them reached a place called Liusha and became immortals there. Laozi was a great scholar of the state of Chu in the Spring and Autumn Period. He was the author of the Dao De Jing, a work of extensive and profound knowledge and a book full of plain philosophy. In the Eastern Han Dynasty, Daoists started to value the Dao De Jing as their scripture, and Laozi was deified and revered as Taishang Laojun (The Grand Supreme Elder Lord) and Daode Tianjun (The Universal Lord of the Way and Its Virtue). According to legends, even Confucius, the great educationalist, had once consulted Laozi about the Way. Daoist ideas preached by Laozi and Zhuangzi and the school Confucianism developed by Confucius have been two important spiritual pillars supporting the Chinese nationality for over two thousand years.
Liao Hongbaio depicts the episode of Laozi leaving the city by Hangu Pass as an allegory of Laozi’s aspiration for the life in a natural society – this is an important issue in Laozi’s thoughts – and of his pursuit of the state of “a person becoming noble when he has no more desire”. Frustrated with the downfall of the Zhou Dynasty, Laozi was determined to live as a hermit. He highly valued nature and called for living with the Way and its Virtue, regulating desires, being sincere, embracing calmness and cherishing one’s roots. Laozi believed that by doing the above one could be enlightened with the philosophy of life, and that nature was the ideal place where he could obtain enlightenment. Liao Hongbiao does not depict Laozi as a deity. He presents Laozi as an amiable elderly and a very wise man who appears slow-witted. Laozi’s broad forehead and thick white hair signify his great wisdom; two sharp eyes and a mild sense of indolence are put together to indicate that he loves to shrug off unnecessary formalities; slightly stooping, he hangs the bamboo slips of the Dao De Jing obliquely on his back; he waves his horsetail whisk carelessly with both hands, with a finger of his right hand pointing to signify “one”; his eyes stare at the sky and it seems that he has entered the realm of primordial universe.