在中国,年龄真的不一样计算吗? 我听说如果我现在19岁,到中国就变成20岁了? 这是真的吗?我真的很好奇! Is it true that in China, your age is counted differently? I heard that even if I'm 19 years old now, if I go to China, they will consider me 20? Why is that? I'm really curious!