扬汤止沸 (yáng tāng zhǐ fèi): To use a temporary or ineffective method to solve a problem — Meaning & Stroke Order

The plan he proposed is just stirring the soup to stop it from boiling; it doesn't touch the core issue at all.

Rather than stirring the soup to stop it from boiling, it's better to remove the firewood from under the pot.

Relying solely on fines is like stirring the soup to stop it from boiling; we must strengthen education to eradicate this phenomenon.

The government cannot just stir the soup to stop it from boiling; it must tackle pollution at its source.