The Well mansion (井宿, pinyin: Jǐng Xiù ; Japanese: chichiri-boshi) is one of the Twenty-eight mansions of the Chinese constellations. It is part of the southern mansions associated with the Vermilion Bird, one of the Four Symbols of Chinese astronomy. The Well mansion is located in the constellation Gemini in Western astronomy and includes: Mu Geminorum (Tejat Posterior) - 井宿 (Jǐng Xiù yī), the first star of Well,[1]Nu Geminorum - 井宿二(Jǐng Xiù èr), Xi Geminorum - 井宿三 (Jǐng Xiù sān), Epsilon Geminorum (Mebsuta) - 井宿四 (Jǐng Xiù sì), Zeta Geminorum (Mekbuda) - 井宿五 (Jǐng Xiù wǔ), Lambda Geminorum - 井宿六 (Jǐng Xiù liù), Kappa Geminorum - 井宿七 (Jǐng Xiù qī), Iota Geminorum - 井宿八 (Jǐng Xiù b)[2]