Some call that deep and meaningful--I call it crap.
You don't know anything about Asian literature or literature in general.
I am a Bengali, and there are so much deep and profoundly interesting works in Bengali literature alone- I am afraid I am going to have to die before reading all the good stuff.
Although Bengali is 1200 years old, the modern Bengali literature only started about 200 years ago, and due to invasions and political unrest during 1200-1757, there are mot much volume of work of note.
Japan has had political unrest in its history, but it is a more continued (for the lack of a better word) culture. There must be 3x-10x more works in Japanese than Bengali.
And I have left out modern and medieval Urdu literature, and whole of China out of this comment.
The fact that you are putting all of the works- literally tens of thousands if not hundreds of thousands pieces of literary art into "Asian literature" bucket and trying to generalize them foolishly shows your utter and complete ignorance in these matters.