Can you fine tune - 叔叔阿姨谢谢你们热情的招待！虽然tony说你们说不用寄茶叶了但还是想给你们尝尝看台湾的茶叶希望你们会喜欢~ 这次谢谢你们热情的招待让我对哈尔滨留下了美好的回忆

Dear Uncle and Auntie,

Thank you for your warm hospitality! Even though Tony said that you didn't need to mail tea leaves anymore, I still wanted to give you a taste of Taiwanese tea and hope that you will enjoy it.

Thank you again for your gracious hospitality during my visit. You have left me with wonderful memories of Harbin.

Best regards,