空
This Chinese character means sky or empty.
You can watch how to write this. - (「空」の書き順（筆順）動画 - 漢字書き順辞典)
There are 2 main ways to read this, "そら" or "くう".
When this is combined with other Chinese characters, this is often read as "くう".
For example, "空港 (くうこう)" means airport.
"港 (こう, みなと)" means port or harbor.
"空気 (くうき)" means air.
"気 (き)" also means air.
"空間 (くうかん)" means space.
"間 (かん, あいだ)" also means space.
"空き缶 (あきかん)" means empty can.
"缶 (かん)" means can.
Japanese people like to read the room.
"Read the room" is "空気を読む" in Japanese.
"読む (よむ)" means read.
Japanese should better understand the importance of thinking for themselves.
I want to remind it myself.
By Higashi-Mikawa Kyōjindō Shujin (東三河狂人堂主人)