You can infer this person's date of birth from the Yin Na you provided.
You ask: What do you mean by gold foil and sword in the sand? In fact, in our words, you are asking for a voice. There are many expositions about Yin Na's taking pictures in ancient books.
Yes . It takes more than one or two sentences to make it clear. Even if we want to talk about the naming purpose of "Middle-earth Gold Foil, Jin Jian and Jinsha", we need a mathematical foundation and a certain metaphysical concept to understand it.
Alas. . . What's the use of knowing these meanings? The analysis of eight characters needs to look at the overall situation, and I only know the meaning of the sound, so I can't be arbitrary about eight characters.
So I'll answer your question directly. (Note: There are many changes, additions and deletions in images throughout the ages, so I won't go into details, just take a look as an understanding. )
Middle earth in sand: river valley, alluvial plain, embankment, wet mud, sand, soup making, beach, sunshine bath, sand bath, sand sculpture, teapot, good tea drinking, desert, pangolin scales, ancient cultural relics, buried talents and future.
Gold foil gold: gold ornaments, gold paintings, walking gold, bells, ring buckles, ware shops, ornaments, jewelry, paper money and surface scenery.
Sword front gold: sword, halberd, vertebral disc, hilt, weapon, morning exerciser, antique shop, army.