One character a day, easy to master Chinese characters. Let's take a look at the basic knowledge of "炎".

炎 yán
Explnantion: scorching
Phrases: 炎热 （yán rè）scorching; blazing ； 炎夏（yán xià） hot summer
一看这个字（ ）便知道和火有关，而且火还烧得很旺呢，所以就指“烈火”，同时它也有“燃烧”的意思。
Two fires combined together, one atop the other, like flames licking the sky （ ）, represents the idea of “a roaring fire.” This is the original meaning of炎. Then it was extended to mean “burn”; from “burn” it was also extended to mean “burning hot”, as in 赤日炎炎 (chì rí yán yán: “the scorching sun”).    
       

Sentences:

Yánrè de tiānqì ràng rén jué de xiōngkǒu fāmèn.
炎热的天气让人觉得胸口发闷。
The hot weather in summer makes me feel suffocated.