Gǎigé kāifàng yǐlái, zhèli de jīngjì xīnxīn xiàngróng.
Since reform and opening up, the economy here has flourished.
Tips
usage
Today 欣欣 is heard mostly in 欣欣向荣 'flourishing, thriving', said of plants, economies and whole towns. The 'joyful' sense survives in 欣欣然 'happily, with delight'.
history
The idiom comes from 陶渊明's 《归去来兮辞》: 木欣欣以向荣 'the trees, glad, grow toward their prime', where the trees seem to share the poet's joy at going home.