Question

요리를 잘 하는군요! Both endings are used to express spontaneous emotional reactions, exclamations of surprise.The ending -네 indicates that the message conveys the factual truth, not a conjecture. Meanwhile -(는)군 expresses an exclamation about the speaker's assumption. That is why -네 cannot be used when mentioning something not learned/experienced directly by the speaker.

Accepted Answer

Ah, you must be good at cooking!

Front	요리를 잘 하는군요!
Back	Ah, you must be good at cooking!
Notes	Both endings are used to express spontaneous emotional reactions, exclamations of surprise. The ending -네 indicates that the message conveys the factual truth, not a conjecture. Meanwhile -(는)군 expresses an exclamation about the speaker's assumption. That is why -네 cannot be used when mentioning something not learned/experienced directly by the speaker.

네 요리를 잘 하는군요 Ah Good Cooking Endings