i don't even know half of what you know hahaha

I don't know anything yet ._.

Now you know.

저도 모르겠네요 ㅋㅋㅋㅋ 또 추가 보상이 있는건지 뭔지..
매번 수수께끼 실마리나 힌트가 적어서 여기서 뭐를 더 시도해볼 엄두가 안나요 ㅋㅋ

이스터에그 같은 건가요...

Note:
After some trial and error, I found the trigger condition for this event is that 4 stones are placed on the well and one stone is thrown into the well.
After the event, if you try to do the same thing with other stones including the golden stones, nothing happens.
Yet I don't know what exactly this means.