such moon.. you now want to talk about vietnam 90% instead of china 67% instead of realising this topic is about the 2:1 discount (aka 50% off aka 1/2 aka /2)

if you want to talk about vietnam 90 or china 67 and you want to know how or why.. go make a topic about it and find out

realise this topic is not about that. realise you are making so many bad mistakes because you dont even know what topic you are in, and then go make a topic about the thing you really are trying desperately to turn the conversation into

but whilst making the topic.. learn about the tariff rates.. i gave you enough hints