What are the plot loopholes in Game of Thrones?

What are the plot loopholes in Game of Thrones? I feel that there will be a big wave of slots coming.

Slot one, in the first season of Game of Thrones, began to render how powerful the alien ghosts are, which is simply invincible. As a result, in the subsequent right tour, Giseno actually killed the aliens with no effort? What is even more ridiculous (I can't remember which episode) is that Giuseppe went straight to the point, crossed a sea of ghosts, directly solved the alien ghost, and then a ghost fell with him. Gishino also solemnly explained in the play that if the first alien ghost is killed, the rest of the ghosts will follow ... and then die. Well, I don't quite understand the connection between ghosts and ghouls. You can say whatever you want.

Slot two, in the previous setting, the Great Wall is not only made of ice and stone, but also engraved with ancient spells on its foundation. The magic circle set by ancestors and sons of the forest can only be destroyed by dragons who are also magical creations. So, the night king rode a dragon and blew fire to destroy the Great Wall. What is surgery? Is the dragon rode by the night king an equally magical creation?

In the third slot, there are two kinds of alcoholic drinks for all friends, one is the wine drunk by nobles, and the other is the ale (actually beer) drunk by civilians. Judging from the production technology, the brewing technology mastered by Quanyou Fiction Mainland is still relatively low. But later, because the screenwriter loved rum too much, Quanyou appeared a third kind of wine-rum. Let's not talk about the fact that rum really exists in our lives and how abrupt it is in fictional story scenes. Say something else. First of all, rum appeared in the 17th century, much later than wine. Secondly, the brewing process of rum is much more complicated than that of wine, and the brewing level of right-hand travel can not be made.

..... Wait, it's really not much.