Question:
Which employer did Wong He work for in Jan, 1987?

Context:
 Wong He works for Television Broadcasts Limited from Jan, 1995 to Sep, 2011. 
 Wong He works for Commercial Radio Hong Kong from Jan, 1992 to Jan, 1995. 
 Wong He works for Hong Kong Police Force from Jan, 1986 to Jan, 1992. 
 Wong He works for Now TV from Jan, 2012 to Dec, 2022.

Answer:
Hong Kong Police Force