๋ณด๋ค
์ด๋ฒคํธ
์์ฅ
ํ์ด์ง
๋
In case you have a free 9 hours, plus ๐ - advanced knowledge ahead.
๋ ๋ก๋
ํญ๋ชฉ์ ๊ตฌ๋งคํ๋ ค๊ณ ํฉ๋๋ค. ๊ณ์ํ์๊ฒ ์ต๋๊น?
