Does having a masters degree from a Chinese university have negative view for a PhD applicant in the United States? I love travelling and I was thinking of getting my Master’s degree in mathematics abroad (I got my bachelors in the USA). I know that I can get funding if I go to China for my master’s.

Will it be viewed negatively if I try to apply for a PhD in the United States?
I have some experience with Asian Universities, particularly Japanese.

First, take into account that having a Masters might boost a bit your application to PhD a bit, as long as you publish something over there. Also, if the profesor you are going with is unknown, it might not help you at all.

Second, many people think that studying abroad and traveling are similar things, when they are really not. You'll have to deal with the hardships of asian Academic culture, which are very different from the American ones. 

You'll also have to deal with the hardships of life, be sure to know the language at least to communicate basic thoughts and deal with the fact that you might not like food there (Protip: Chinese American Food is somewhat different of real Chinese Food)

I would put more, but I would be edging on ranting, which I'm probably already are.