素材 (sù cái): Raw material / source material (Noun) — Meaning & Stroke Order

This is material for writing an essay.

The quality of these raw materials is not high enough to be used in our advertising campaign.

I organized some travel anecdotes as source material for writing a novel.

These interview records are valuable material for making a documentary.

Although the source material is abundant, the report still needs revision due to a lack of core viewpoints.