徐徐 + Verb
The adverb 徐徐 (xúxú) means 'slowly,' 'gently,' or 'gradually.' It is a literary reduplicated form that conveys a calm, unhurried pace and is often found in descriptive or poetic writing. It is more elegant and formal than the everyday word 慢慢.
国旗在微风中徐徐升起。
Guóqí zài wēifēng zhōng xúxú shēngqǐ.
The national flag rose slowly in the gentle breeze.
列车徐徐驶出了车站。
Lièchē xúxú shǐchū le chēzhàn.
The train slowly pulled out of the station.
花瓣徐徐飘落在湖面上。
Huābàn xúxú piāoluò zài húmiàn shang.
Flower petals drifted slowly down onto the surface of the lake.