2 sentences for 火气 (huǒ​qì)

1. 熬夜容易导致体内的火气上升。

   áo​yè róng​yì dǎo​zhì tǐ nèi de huǒ​qì shàng​shēng.

   Staying up late can easily cause internal heat to rise.

   Source: Dong Chinese Dictionary

2. 他最近火气很大，总是无缘无故发脾气。

   tā zuì​jìn huǒ​qì hěn dà, zǒng​shì wú​yuán​wú​gù fā pí​qi.

   He has been very irritable lately, always losing his temper for no reason.

   Source: Dong Chinese Dictionary