朋友從美國用USPS寄的郵件RE383426843US ，10月4日就到北京了，可我現在還沒收到，已經16天了。

Your item departed a transfer airport in CAPITAL, BEIJING, CHINA on October 4, 2016 at 9:37 pm. The item is currently in transit to the destination. 這些信息是哪裏來的？