3 sentences

1. 改革开放以来，中国发生了翻天覆地的变化。

   gǎi​gé kāi​fàng yǐ​lái, Zhōng​guó fā​shēng le fān​tiān​fù​dì de biàn​huà.

   Since the reform and opening up, China has undergone earth-shaking changes.

   Source: Dong Chinese Dictionary

2. 她嫁入豪门后，生活发生了翻天覆地的变化。

   tā jià​rù háo​mén hòu, shēng​huó fā​shēng le fān​tiān​fù​dì de biàn​huà.

   Her life changed dramatically after she married into a wealthy family.

   Source: Dong Chinese Dictionary

3. 这些调皮的孩子在屋里闹得翻天覆地。

   zhè​xiē tiáo​pí de hái​zi zài wū​li nào de fān​tiān​fù​dì.

   Those naughty children turned the house upside down.

   Source: Dong Chinese Dictionary