约4589.15公里；
飞机的话大概需要5个小时左右的路程，转机的话则需要7个小时左右。
Dear Xiaolu,I must write and thank for your having invited me to your home during this National Holiday．I am very grateful for the hospitality you and your family showed to me．Your hometown leaves a deep impression on me．I appreciated very much your efforts in making my stay as pleasant as possible．Thanks again for everything you and your family have done for me! Please come to my home if you have time．Your sincerely,Xiao Dong
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