It should have nothing to do with it. There are so many people taking the postgraduate entrance examination that it is irrelevant. . .

Of course, if other conditions are similar, you show a certain understanding and great interest in this major and direction, and the tutor may be inclined to admit you. But not a necessary condition.

Tutors are experienced people, who know better than anyone what the graduation thesis is about. That kind of thing is largely deceptive, so don't take it too seriously.