I tell you from my experience: 1 Open * * * is the first case. In this case, the tongue inside should be turned out and stamped, and the seal should be signed. 2. The examination paper of my specialized course is the second case, and there is no tongue in it. At that time, I just scratched along the sealing line with a knife (the sealing line was on the side) and took out the test paper to do it. In this case, your method is correct, but because there is no tongue, there is no confusion as you said.