아래 화학 유머 hi는 언급 안하길래 그냥 답만 외운건가 싶었는데 

질문을 영어로 하니 이렇게 답변함 

The riddle plays with chemical symbols and the word "hello." Here's the explanation:


1. Carbon's Chemical Symbol: The chemical symbol for carbon is "C".

2. Sodium's Chemical Symbol: The chemical symbol for sodium is "Na".

3. Hello in Informal English: A common way to say hello is "hi".


When you combine these elements:

C (Carbon) + hi (hello) + Na (Sodium) = C + hi + Na = China

So, in the word "China", carbon (C) and sodium (Na) are essentially saying "hi" to each other. Therefore, China is the country where carbon and sodium say hello.