How should I say. How Should I express this correctly:i'm not working now.I'm after work.I'm off work now.Thank you very much.

My hands are tied Dear.Italkers. I have a question.Could someone help me to understand it?I really appreciate it . thank you.The question is When I Wanna Say there is nothing I can do，I can't help you with this，Can I say my hands are tied？

Does anyone Know a place to practice English speaking，like an english corner in Guangzhou Does anyone Know a place to practice English speaking，like an english corner in Guangzhou .I appreciate it.Thank you.