藍燈籠

藍色嘅#燈籠，喺傳統華人社會，屋企有喪事時掛喺門外 (blue lantern, a kind of lantern used in traditional Chinese funerals)

#警車 (police vehicle)

黑社會嘅非正式成員 (an affiliated member of a triad, a new recruit who has not been formally accepted into a triad society but who has a protector who is a member)