golden child; promising young talent
Idiomatic expression for a young person with exceptional talent or potential, seen as a valuable asset. Often used in business or sports contexts.
He is expected to be the company's golden child.
The rookie player is the team's promising young talent.
golden egg; cash cow; gold mine
Idiomatic expression for a product, business, or asset that generates great profit. Similar to 'golden goose' in English.
This new product will probably become the company's cash cow.
That patent is truly a gold mine.