Just an average Joe who happens to be a serious English learner.
Here's to those Mandarin learners whose native/first language I'm currently not learning: I would still love to help you out as long as you find my English intelligible for you. No problem at all! (You can check out those existing answers of mine to decide if you could use some of my help.)
Last but not least, if you want to add me, please do include a message and hopefully it says more than just hi. Thanks for dropping by and enjoy!