This is the 480th most frequent Korean word.
행사에
"To the event" or "at the event."
In this sentence, '행사에' signifies the location or context of his decision to attend, where '행사' means 'event', and '-에' indicates 'to' or 'at'.
그는 행사에 참석하기로 결정했습니다.
He decided to attend the event.
Here, '행사에' relates to the event's context as the subject of success, emphasizing the ceremonial aspect of the phrase.
우리는 행사의 성공을 기원하며 축사를 준비했습니다.
We prepared a congratulatory speech wishing for the success of the event.
In this context, '행사에' is utilized to specify the purpose or association of the items required, linking '행사' (event) with '-에' (for).