World's Worst Cultural Mistakes
What’s Offensive: In some countries, like China, Japan, and some African nations, the food’s the thing, so don’t start chatting about your day’s adventures while everyone else is digging into dinner. You’ll likely be met with silence—not because your group is unfriendly, but because mealtimes are for eating, not talking. Also avoid conversations in places a country might consider sacred or reflective—churches in Europe, temples in Thailand, and saunas in Finland.
What You Should Do Instead: Keep quiet!
From the article World’s Worst Cultural Mistakes