Not giant hornets
Yes, there are quite a lot of different hornet species in Asia. Luckily the giant hornet is only one of them.
That said even the smaller ones can be quite aggressive if they feel their nest is threatened.
Last week a group of Marathon runners in Japan found that out the hard way. And those were smaller hornets. Their nest was only half a meter in diameter. Giant hornet nests can easily reach a meter.
From personal experience I can say giant hornets are really something special. Already the sound they make is nothing like other wasps. They sound similar to the sound a big beetle makes during flight. But they have nothing of the clumsiness of a beetle. Occasionally one zips through our garden. Good that they don't go for sweet stuff, like European wasps. As long as they don't defend their nest and you aren't a honey bee, you should be safe. Of course knowing that doesn't make you feel any better if one is hovering in front of you. Running away does not work, standing still does not make her go away and slowly walking off takes a lot of willpower.