I know where Shenzhen is of course, I've been here 6 years =P
I am currently a high school music teacher, and on Steem I run @steemstem curation project.
Since you studied STEM subjects (Economics can also be STEM), you are welcome to use our tag, #steemstem if you ever write about these things. We are currently at the top of the trending feed so check us out! We have a discord, a site (steemstem.io) and so forth and reward pretty well for high quality posts =)