Daiyu is a girl’s name of Chinese origin, meaning “black jade.” Jade was one of the most highly prized gems in ancient China, with rare black jade used to symbolize the north. The philosopher Confucius associated jade with heaven, earth, kindness, wisdom, virtue, justice, and sincerity. It was also symbolic of nobility and wealth. Today, black jade is considered to have strong protective qualities, guarding against negative energy. Therefore, giving baby this beautiful name could express your wish that they always remain protected as they go through life.