Correct

朗朗

/ lǎng lǎng / 
Strokes

Definition

lang lang

Example

As an Onomatope

(of sound) loud and clear

1
Shūshēng
书声
lǎnglǎng
朗朗

ringing sound of reading aloud

As an Adjective

bright and clear

2
Lǎnglǎng
朗朗
xīngguāng
星光

bright/shiny stars