Chart of the Twelve Stations and the Sun-Moon Conjunctions

The Erya the oldest surviving Chinese encyclopedic dictionary, dating to the 3rd century BCE says: "The calendar models the Sun, the Moon, and the Stars [Chen]." The commentary states: "Chen original: 辰 refers to the place where the Sun and the Moon meet. This refers to the Sun and Moon forming a conjunction within the Twelve Stations the Shi’er Ci, twelve equal divisions of the celestial sphere used to track the sun's position. Therefore, the Zuozhuan an ancient narrative history says: 'The meeting of the Sun and the Moon is called Chen.' The commentary further explains: 'In one year, the Sun and Moon meet twelve times; the location of each meeting is defined as a Chen.' For example, in the eleventh month, the Chen is in the station of the Star Record original: 星紀, Xingji, and in the twelfth month, the Chen is in the Empty Vessel original: 玄枵, Xuanxiao, and so on."

The Poem says:
Split Wood original: 析木, Ximu resides at the position of Yin,
Great Fire original: 大火, Dahuo is in Mao, and Longevity Star original: 壽星, Shouxing in Chen.
The Three Quails the stations of Quail's Head, Quail's Fire, and Quail's Tail occupy Si, Wu, and Wei,
While Sinking Essence original: 實沈, Shishen dwells in Shen.
Great Bridge original: 大梁, Daliang in You, Descending Enclosure original: 降婁, Jianglou in Xu,
And Girdle of the Maiden original: 娵訾, Quzi, Empty Vessel, and Star Record are displayed occupying the positions of Hai, Zi, and Chou.
The first month of spring meets in the Girdle of the Maiden;
Count backwards to follow the turning wheel.