This small leaf warbler breeds in Chinese mountains. Its upperparts are gray-green, its underparts are whitish, and it gives a long, mechanical song.
It has gray-green upperparts, a pale rump, and light wing bars. The underparts are whitish, sometimes with a pale lemon or gray wash on the breast sides.
On its breeding grounds it uses mountain broadleaf forest, sometimes mixed with conifers. Its rolling, monotonous song has been reported to last 10–15 seconds.
An extinction-risk assessment has not been added yet.