A question about win trade banned

Dear GM,
Sorry to bother you and I am confused about the win trade banned.
I saw a lot of appeal from chinese player recently. They were banned because of win trade.
it will be great appreciate if the following question could be addressed.
1. How do you define the win trade? I considered it as a trade between the alliance and horde, they won one by one. But actually things it may usually happen in another way, the players give up very fast when the other side is premade. So I am wondering if it is also considered as win trade?
2. Based on the terms of Nostalrius, is it allowed to do a premade battleground?
Thanks for your reviewing.
Regards,
Sorry to bother you and I am confused about the win trade banned.
I saw a lot of appeal from chinese player recently. They were banned because of win trade.
it will be great appreciate if the following question could be addressed.
1. How do you define the win trade? I considered it as a trade between the alliance and horde, they won one by one. But actually things it may usually happen in another way, the players give up very fast when the other side is premade. So I am wondering if it is also considered as win trade?
2. Based on the terms of Nostalrius, is it allowed to do a premade battleground?
Thanks for your reviewing.
Regards,