Why don't I call it "plum"

Lao Zi is not called "Plum" because his real name is Li Er.

Lao Zi, whose real name is Li Minger, whose name is Bo Yang, or Shu Bo Yang, was born in the late Spring and Autumn Period, and his date of birth and death is unknown. According to "Historical Records" and many other ancient books, Laozi was a native of Guxian in the Spring and Autumn Period, but after his death, Guxian belonged to Chu in the Warring States Period and Chu in the Han Dynasty.

Laozi served as a Tibetan shepherd in the Zhou Dynasty and was famous for his erudition. Once, Confucius went to see Zhou and asked him for a gift. At the end of the Spring and Autumn Period, the world was in chaos, and Lao Tzu wanted to abandon his official position and retire, so he rode a green cow westward. When I arrived at Hanguguan, I was invited by Yin to write Tao Te Ching. Tao Te Ching (also known as Laozi) is one of the most widely circulated works in the world.

Laozi's thought has a far-reaching influence on the development of China's philosophy, and its ideological core is simple dialectics. Politically, it advocates teaching by doing nothing and teaching without words. Politically, pay attention to the truth that extremes meet. In the aspect of self-cultivation, it is the core of Taoist thought to pay attention to the practice of modesty and sincerity without competing with others.