Sino

Lore

Sino (신오) is one of East Asia’s oldest and most powerful symbols—a three-legged crow usually shown inside a solar disk. Together with the moon-dwelling toad, it embodies cosmic duality: the crow stands for light, life, and the masculine principle (yang), while the toad represents darkness, death, and the feminine principle (yin).

In Korea, especially in the Goguryeo kingdom, Sino was an emblem of imperial authority and power. Its image appears on tomb murals such as those at Ssireum, Ssangyeong, and Cheonwangjisin.

The bird’s three legs carry deep meaning: they represent the triad cheon-ji-in—Heaven, Earth, and Humanity. As such, the crow is a mediator connecting all three realms, and whatever it does echoes throughout the cosmos.

Crows also serve as messengers in Korean lore, bringing both good and ill tidings. A famous example is the legend of King Soji of Silla. In the tenth year of his reign the king met a crow in Gyeongju; the bird led him to a box containing a note that said, “Shoot the stringed chest.” Back at the palace he shot an arrow into his favorite chestfor musical instruments. Inside were a dead monk and a princess—conspirators who had planned to kill him. This story is the first to name Sino, the heavenly crow that delivers messages to earth, either by speech or inside a box.

Sino is a majestic three-legged crow. Its plumage is jet-black with flashes of bright red on the wings; some accounts say the entire bird is crimson. Its eyes gleam gold like the sun where it dwells, and it is often wreathed in multi-colored clouds that hint at immortal realms.