1) Move the “hong_kong” folder to the path “GTA V\update\x64\dlcpacks”

2) Using OpenIV, go to the path "GTA V\update\update.rpf\common\data"

3) Open the "dlclist.xml" file in editing mode (RMB or Ctrl + Enter)

4) At the end of the file add the line <Item>dlcpacks:/hong_kong/</Item>