The Mid-Autumn Exam, also known as the Moon Festival Exam, originated in China during the Tang Dynasty, around the 8th century. This examination was a part of the civil service selection process, which was a crucial component of the imperial examination system. The Mid-Autumn Exam was specifically designed to test candidates' knowledge of poetry and literature, reflecting the cultural significance of the Mid-Autumn Festival itself.

The Mid-Autumn Festival, celebrated on the 15th day of the eighth lunar month, holds great cultural and historical importance in China. It is a time for family reunions, moon gazing, and enjoying mooncakes. The festival's literary and poetic associations made it an ideal occasion to assess candidates' literary skills and cultural knowledge. The exam was a unique blend of practical and theoretical questions, with candidates expected to demonstrate their ability to compose poetry, interpret classical texts, and understand the historical and cultural context of the Mid-Autumn Festival.

Historical records indicate that the Mid-Autumn Exam was first introduced during the reign of Emperor Wenzong in the Tang Dynasty. The exam was conducted annually, and candidates who passed were granted positions in the government. The practice of the Mid-Autumn Exam continued through the Song Dynasty and even into the early years of the Ming Dynasty, although it gradually lost its prominence as the civil service examination system evolved.

Data from the Tang Dynasty's "Tongdian" (General History of the Tang) and the "Zizhi Tongjian" (Comprehensive Mirror in History) provide insights into the Mid-Autumn Exam's origins and significance. These texts describe the examination process, the types of questions asked, and the expectations placed on candidates. The Mid-Autumn Exam was not only a test of literary prowess but also a reflection of the candidates' moral character and cultural understanding.

In conclusion, the Mid-Autumn Exam originated in the Tang Dynasty as a unique and culturally rich component of the civil service examination system in China. It was a testament to the importance of literature and poetry in the Chinese cultural landscape and served as a platform for assessing candidates' knowledge and skills. The exam's origins and significance are well-documented in historical texts, providing a clear understanding of its place in Chinese history and culture.