The fortune teller said that I was suitable for construction and other jobs, but I was afraid of dirt. What's the difference between them?

Although the building as a whole belongs to soil,

But its technology is closely related to metals, such as:

Rebar for building materials, ordinary wire;

Steel and aluminum doors and windows, building curtain walls, steel structures, radiators, door and window fittings, templates, fasteners, water supply and drainage equipment and other related materials are widely used in the field of construction engineering.

This belongs to gold.

I guess what he means is that you prefer to treat your life as gold rather than dirt.