No direct experience with your pistol, but some experience with the nonstandard dovetails that Norinco sometimes uses. I assume you are going to replace the stock sights with something aftermarket. If you haven't already, check that your slide dovetails are of a standard size, otherwise there is no point in removing them. Then, as bscout noted, most dovetail sights go in from right to left. Confirm this by measuring your dovetail slots with a caliper (wider on the entry side).
A brass punch will be ideal for removing them in the end, but you can use a steel punch if you don't mind marring the finish. I've also removed and installed a few sets of dovetailed sights using scrap wood.