Me and my brother (twins), are 15 this year, were born in Singapore and is currently living in China, without being PR in China or anything like that. My dad is Chinese (Chinese as in nationality) and my mom is Singaporean.
My mom has passed away in 2007, when I was 10. And we have been living in China since we were 12 years old. We have been studying in China for almost three years now.
So I was wondering if it is possible in any way to avoid NS as my grandma was talking to me about changing my nationality to Chinese. If any more information is needed, just ask.