I am approaching 50's and not much works to engage my time. So I spend 90% of my time travelling while the rest hang out with young start ups and fellow mind like me. No where that I am feel more comfortable like our mother's land "Thailand". But ShenZhen is SEZ (Special Economic Zone) of China.
It is a huge and active scene for young start ups and new entrepreneurs of new technology and etc. So I hop in and out between ShenZhen and Hong Kong as I use Hong Kong as gateway to connected other cities for my travelling.