Black Coal, Thin Ice Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. Two former cops start investigating the series of murders that tanked their careers when the killings begin again. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : mei, Liao Fan, Gwei Lun, Yu Ailei, Ni Jingyang, Xuebing Wang, Wang Jingchun .