피서
bɪfɔː ʃʌθɹiː bɪfɔːʃəθɹiː tʊ ɐvɔɪd ðə hiːt bʌt ðə kɔɹiːən kɒnsɛpt ɒfən ɪŋkluːdz spəsɪfɪk aktɪvɪtiz and ei5 səʊʃəl aspɛkt
In Chinese 避暑 (bìshǔ) - to avoid the heat, but the Korean concept often includes specific activities and a social aspect.
The act of going away to a cooler place during the hot summer months to escape the heat.
Example
"이번 여름에는 피서를 갈 계획이에요."