The character 王 has two etymological stories, one naturalistic and one philosophical. Both were current in early imperial China and both persist in how speakers think about the character today.

The naturalistic story, confirmed by oracle bone evidence: 王 was originally a pictograph of a large ceremonial axe — the executioner's blade that symbolised royal authority. The three horizontal lines depict the blade, handle-mount, and pommel of the axe. Kingship in the Shāng dynasty (c. 1600–1046 BCE) was in part the authority to take life in ritual, and the character preserved that image.

The philosophical story, elaborated by the Han-dynasty Confucian Dǒng Zhòngshū (c. 179–104 BCE): the three horizontals are Heaven (天), Earth (地), and Humanity (人), and the vertical is the king — the one figure who joins all three. This gloss appears in Dǒng's Chūnqiū Fánlù and was taken up by Xǔ Shèn in the Shuōwén Jiězì a century later. It is not the earliest origin of the character, but it became the dominant cultural reading, and still is.

The two stories are compatible. The axe became the king; the king became the cosmic mediator. Both senses live on in the character's modern use.

Dǒng Zhòngshū's gloss keys into a cosmological structure older than his own system: the 三才 (sāncái, "three powers") of Heaven, Earth, and Humanity. These are the three interacting realms through which qi circulates. The king's specifically royal function is to keep them aligned — to perform the sacrifices that Heaven requires, to regulate the agricultural calendar that Earth imposes, and to govern the human society that fills the space between.

When the three fall out of alignment — drought, earthquake, rebellion — the king's authority is called into question. The Mandate of Heaven (天命 tiānmìng) doctrine makes the causal chain explicit: a bad king is a king who has lost Heaven's support, and Heaven's withdrawal shows in the disasters of Earth and the unrest of the people. The character 王, with its three horizontals joined by one vertical, is the visual summary of this political theology.

In the People's Republic, 王 is the most common surname, narrowly ahead of 李 (Lǐ) and 张 (Zhāng). Roughly one in fourteen people in China is surnamed Wáng — around 100 million people. The name derives from the several Zhōu-dynasty royal lines whose descendants, after losing power, adopted the surname Wáng ("of the royal family") to mark their lineage.

Unlike most Chinese surnames, which are indifferent to their character's other meanings, 王 carries a faint aristocratic echo in its sound and sense. The historical Wáng clans include some of the most distinguished names in Chinese culture: the calligrapher 王羲之 (Wáng Xīzhī, 303–361), whose Preface to the Orchid Pavilion is considered the supreme masterpiece of Chinese calligraphy; the Tang poet 王维 (Wáng Wéi, 701–761); the Northern Song reformer 王安石 (Wáng Ānshí, 1021–1086); and the philosopher 王阳明 (Wáng Yángmíng, 1472–1529), whose innovations in Neo-Confucianism are covered in the 心学 entry.