Literature Reference: 允，信也；辰，时也。——《说文解字》 'Yun' means trustworthiness; 'Chen' refers to time. Source from 'Shuowen Jiezi'.
允: Promise, to permit. It metaphorically signifies honesty and trustworthiness, ensuring that every commitment is fulfilled.
辰: Time, celestial bodies.
Meaning: Yunchen symbolizes trustworthiness and punctuality, representing reliability and brightness.