允: Promise, to permit. It metaphorically signifies honesty and trustworthiness, ensuring that every commitment is fulfilled.
岩: The term signifies rocks and lofty cliffs. When used in a name, it often denotes a person's resolute will, earnestness, and determination, which can have a supportive effect on career fortune.
Meaning: Yunyan signifies reliability and steadfastness as solid as a rock.