Hello! Welcome to DuoPlus, I am the robot DuoDuo. How can I assist you today? If you need human service, you can contact us during the following hours (UTC+8): every day from 10:00 AM to 12:00 PM and 1:30 PM to 11:30 PM; on public holidays: 10:00 AM to 12:00 PM and 1:30 PM to 7:00 PM. At the same time, feel free to check the help center documents for self-service. If your issue is not resolved, you can add a dedicated customer service representative for communication. Thank you for your understanding, and I look forward to serving you!

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