HSK 4
Yòu'éryuán lǐ de háizi men zài zuò yóuxì.
The children in the kindergarten are playing games.
HSK 5
Zhè běn shū zhuān wèi yòu'ér shèjì, túhuà duō, zì shǎo.
This book is designed specifically for young children - lots of pictures, few words.
HSK 6
Yòu'ér qī shì yǔyán fāzhǎn de guānjiàn shíqī.
The toddler period is a critical stage for language development.
