底子 (dǐ zi): Foundation / Basis (Noun) — Meaning & Stroke Order

He has a solid foundation in mathematics, so he learns new knowledge quickly.

He has been practicing piano since childhood, so his musical foundation is very solid, making it easy for him to learn composition now.

Has the data foundation of this report undergone strict verification by a third-party institution?

He has a good foundation in English, so he is making rapid progress.

Without a solid theoretical foundation, any innovation is merely a castle in the air.

His foundation in mathematics is not weak; he has just been lacking practice recently.

Although this company is facing difficulties now, it has a solid foundation and should be able to overcome the challenges.

Despite severe market fluctuations, the company continues to develop steadily thanks to its substantial capital foundation and prudent strategy.