5 sentences for 天下 (tiān​xià — rule)

1. 欲王天下者，必先修其德。

   yù wàng tiān​xià zhě, bì xiān xiū qí dé.

   Those who wish to rule the world must first cultivate their virtue.

   Source: Dong Chinese Dictionary

2. 他怀有澄清天下的远大抱负。

   tā huái​yǒu dèng​qīng tiān​xià de yuǎn​dà bào​fù.

   He has the grand ambition to bring order to the world.

   Source: Dong Chinese Dictionary

3. 中国古代有句话叫“马上得天下”。

   Zhōng​guó gǔ​dài yǒu jù huà jiào“ mǎ​shàng dé tiān​xià”.

   There is an ancient Chinese saying: 'Conquering the world from horseback.'

   Source: Dong Chinese Dictionary

4. 古代许多英雄都梦想着统一天下，建立一番功业。

   gǔ​dài xǔ​duō yīng​xióng dōu mèng​xiǎng zhe tǒng​yī tiān​xià, jiàn​lì yī fān gōng​yè.

   Many heroes in ancient times dreamed of unifying the world and achieving great feats.

   Source: Dong Chinese Dictionary

5. 孟子主张以王道治天下，认为只有施行仁政才能使百姓心悦诚服。

   Mèng​zǐ zhǔ​zhāng yǐ wáng​dào zhì tiān​xià, rèn​wéi zhǐ​yǒu shī​xíng rén​zhèng cái néng shǐ bǎi​xìng xīn​yuè​chéng​fú.

   Mencius advocated for the 'Kingly Way' to rule the world, believing that only benevolent governance can truly win the people's hearts.

   Source: Dong Chinese Dictionary