Children hold hands to form a star shape in the water as they cool off at Yeouido Mulbit Square, a waterfront public plaza with shallow fountains, in Yeongdeungpo District, western Seoul, on May 31.[YONHAP]

Children hold hands to form a star shape in the water as they cool off at Yeouido Mulbit Square, a waterfront public plaza with shallow fountains, in Yeongdeungpo District, western Seoul, on May 31.