Okay kiddo, so back in the olden days, after the second world war, there were two big countries in the world who didn't like each other very much. They were the USA and the Soviet Union, and they were really different from each other in a lot of ways.
The USA was a big, powerful country that liked freedom and democracy, where people could say what they wanted and go where they wanted. The Soviet Union was a big, powerful country too, but it was ruled by the government, and people didn't always get to say what they wanted or go where they wanted.
Anyway, because these two countries didn't like each other very much, they got into a big argument. They didn't fight with guns, but they were always trying to show each other that they were better. They did things like send rockets into space or try to create more powerful weapons.
Now, one of the places where this argument was particularly intense was in Asia. That's where countries like China, Japan, Korea, and Vietnam are. Both the USA and the Soviet Union wanted to be friends with these countries, because they knew that Asia was really important for trade and for making money.
But, of course, they didn't want the other country to be friends with them. So, they each tried to make deals with different countries in Asia, and sometimes they even helped them fight in wars. It was like they were playing a big game of chess or checkers, and they were using Asia as their board.
The problem was that sometimes the countries in Asia didn't want to be friends with either the USA or the Soviet Union. They wanted to be independent and do things their own way. But, whenever they tried to do that, they found themselves caught up in the argument between the USA and the Soviet Union.
It was like they were being pulled in two different directions, and they didn't really have a choice about which side to be on. This made things really complicated and often led to conflicts and wars.
So, that's basically what the Cold War in Asia was about. It was a big argument between two powerful countries that had a lot of influence in Asia and wanted to control what was happening there. And, unfortunately, the countries in Asia often got caught up in the middle of it.