According to legend, after Li Yaoshun became an official of Dali, Sun Lizhen fled for all he could eat and changed his surname to Li. Therefore, Li's surnames Dali, Fuyao and Li Zhen are actually groundless. When Li came out in the Spring and Autumn Period, Li Li was the steward, so Li's surname thought it was his family name. According to legend, Gigi Lai II was born under Li Shu, and his mother called Li Shu his surname. In the Tang Dynasty, Li, the royal family, called himself Lao Zi, and later called him "Immortal Li Packing", while Li's clansmen took "Immortal" and "Immortal" as their surnames. Li Er is a historian of Zhou Dynasty. He passed the Hangu Pass. When he passed the Yin Pass, he saw purple gas coming from the east. Because he asked Li Er to write the Tao Te Ching, he was honored as the ancestor of Taoism. Therefore, Li's surname may be ",","Germany", "Germany" and "Donglai". Laozi believes that everything is born of Tao and nurtured by virtue, so Li takes "fostering virtue" as his surname. Confucius once said to his disciples, "Seeing Laozi today is still evil in nature." Therefore, Li takes "Youlong" as his family name. In fact, Confucius said that Laozi's name was Lao Dan, and his surname was an honest man, which was not the same as Laozi's Li Er. Therefore, Li's surname is "Youlong".

As the emblem and nickname of the family, the hall number is an important part of the family culture, and most of it comes from the allusions or anecdotes of a historical celebrity who takes his ancestors as his surname.