They have closed down the exchanges some time ago, but it's not set in stone. What I mean by that is, there's a reason for the ban and it's not "the good of the people" or a similar slogan. They are doing it to make all crypto businesses file for a government issued license and that will require them to pay a certain fee. The license will also make sure only certain people are allowed to run an exchange and this will of course be members of the ruling party or their family members.
IMO by this time next year they will announce the plan to tax and regulate exchanges.