《吕氏春秋·纪·孟夏纪》
孟夏孟夏四月，太阳的位置在毕宿，黄昏时刻，翼宿出现在南方中天，拂晓时刻，女宿出现在南方中天。
一曰：孟夏之月，日在毕，昏翼中，旦婺女中。
Mengxia Mengxia April, the sun is located in the Biezhu, at dusk, the Yizhu appears in the middle of the southern sky, and at dawn, the Nvzhu appears in the middle of the southern sky.