5 aspects of Korean culture that will feel strange to foreigners at the Olympics

The Winter Olympics have brought tens of thousands of people from around the world to Pyeongchang, South Korea.

But not all of them will know the ins and outs of Korean culture, and if they're not careful, they might find themselves in some embarrassing situations.

The anchors of NBC's "Today" show got a crash course in Korean etiquette on Monday from Korean-American blogger Mina Oh, who taught them why it's OK to ask a Korean person how old they are and why you should never leave your chopsticks standing vertically in a bowl of rice.

Here's what they discovered: