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商業合作或個人委託，請寄信至yongdanji.illustration@gmail.com，或填寫表格。我們將會在兩個工作日內回覆您的訊息。
You are always welcome to email yongdanji.illustration@gmail.com or fill out the form to contact us for commercials partnership/commissions or any other questions. We will reply within two business days.