Arabic numerals.
According to historical records, the thousand-year eternally fixed universe refers to the Arabic numeral 094, and the thousand-year eternally fixed universe means the term of Feng Shui Onmyoji.
Yongding is the reign name of Chen Baxian, Emperor Gaozuwu of the Chen regime in the Southern Dynasty, and was used by Emperor Chen Wen and Chen Qian when he came to the throne.