微信聊天里，“嗯嗯”和“嗯”，哪个更危险？
In WeChat, which single reply is more dangerous: “嗯嗯” or “嗯”?
全球翻车率（内测预估）
A一样
yí yàng · the same
B嗯嗯
ǹg ǹg · mm-hm
✓嗯
ǹg · mm
D都很友好
dōu hěn yǒu hǎo · both are friendly
“嗯嗯”是如沐春风，“嗯”是寒风刺骨。字越少，事越大。
嗯嗯 (mm-hm!) is warm and engaged; a bare 嗯 is cold, distant, possibly furious. Fewer characters, bigger problem.