Having lived in China for 4 years i can honestly tell you they are far more valuable as readers and customers than many other countries like India.
I don’t get any problems with China but i do get enormous problems with Indian’s stealing content and basically raping my website and republishing it on theirs without permission.
Around 20% of my traffic came from India so when i blocked the entire country i thought i would lose 20% of my traffic.
Actually, my traffic has increased by over 30% after blocking India because i am preventing Indians from stealing my work and ideas.
On top of this, your site will not get as many low quality links from low authority spam sites in India.