The original meaning of the word "yan" is to extend. If it is the word for generation, the most common interpretation is to quote the meaning of continuing the family fire.
Yue is a high mountain. Generally, it can be extended to refer to the Five Sacred Mountains
The seniority name depends on how the family tree of the up owner should be arranged.
As for the word "yue", it is a general word. If the position is based on earth, the character "yue" should be the second. I personally think it is more suitable for the second son. (The eldest son is still suitable for the word "Feng")
PS: "In other words, the meaning of Yangu also means to introduce. Yanyue can also be interpreted as bringing in the spirit of the mountain spirit of the Five Mountains.
p>(The meaning is grand enough)