In Chinese astronomy , ζ Aql is located within the Heavenly Market Enclosure ( 天市垣 , `` Tiān Shì Yuán '' ) , and the other stars of the constellation are placed within the Black Tortoise of the North ( 北方玄武 , `` Běi Fāng Xuán Wǔ '' ) .
In Chinese astronomy , ζ Aql is within the Heavenly Market Enclosure ( 天市垣 , `` Tiān Shì Yuán '' ) , and the other stars of the constellation are placed within the Black Tortoise of the North ( 北方玄武 , `` Běi Fāng Xuán Wǔ '' ) .