烈酒就是高浓度的烈性酒，也叫蒸馏酒。中国的白酒与白兰地（Brandy）、威士忌（Whisky）、伏特加（Vodka）、朗姆酒（Rum）和金酒（Gin）并称为世界六大蒸馏酒。 Today, Chinese Baijiu is still famous ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.