I believe it's red K to buckle and because there are no police stations or police boxes out here, if you have a complaint or a problem, that's not a major emergency, you would actually write it down, put it on here and when the police make their rounds they would collect it from the box.
我相信是紅K來扣,因為這裡沒有派出所,也沒有警務箱,如果你有投訴或問題,那不是重大的緊急情況,其實你會寫下來,放在這裡,當警察巡視的時候,他們會從箱子裡收集。