Amazon says certain packages could take five to nine days to be delivered within China, specifically those being shipped from the US and other fulfillment centers abroad. Of course, the launch of Prime in China is all part of Amazon's plan to further challenge Alibaba on its home turf, where it has more than 434 million active users.

The question now is how will the Chinese tech giant react to the news. After all, we know Jack Ma, founder and executive chairman of Alibaba, isn't known for being a man of few words.