One of the World's Most Common Surnames: The sheer prevalence of the surname 张 (Zhāng) is culturally significant. It is consistently ranked among the top three most common surnames in mainland China, with a population rivaling that of many European countries. There's a common saying, “三王二张 (sān Wáng èr Zhāng),” meaning “(if you meet five people, there will be) three Wangs and two Zhangs,” to humorously illustrate how common these names are. In Chinese mythology, the supreme deity, the Jade Emperor, has the family name Zhang.
Comparison to Western Surnames: While “Smith” or “Jones” are common in English-speaking countries, the scale is entirely different. In the West, a common surname indicates a historical profession or lineage, but in China, the massive population sharing names like 张 (Zhāng), 王 (Wáng), and 李 (Lǐ) creates a sense of shared, albeit unimaginably vast, clan identity. Addressing someone as “老张 (Lǎo Zhāng)” (Old Zhang) or “小张 (Xiǎo Zhāng)” (Little Zhang) is a common, friendly way to show respect or familiarity in the workplace, reflecting a culture that often organizes social relationships around age and seniority.