纪: The original meaning refers to the end or thread of scattered silk, which metaphorically extends to signify age, years of life, principles, and systems.
延: "To extend, to introduce, and to facilitate the attainment of grand achievements, this character is auspicious for garnering fame, fortune, and good luck."
Meaning: Ji signifies recording and inheritance, while Yan implies continuation and expansion, symbolizing the perpetuation of family and the growth of endeavors.