Tā de zuòpǐn jìnrùnzhe nónghòu de xiāngtǔ qínghuái.
His work is steeped in deep nostalgia for his homeland.
Tips
usage
Literal sense (water soaking into soil/cloth) is straightforward. Literary/metaphorical sense — being 'steeped in' a culture, emotion, or ideology — is more common in writing. In medicine, 浸润 also means 'infiltration' (as in tumor cells spreading).