if you notice, Chinese international students rarely have this sort of relationships with the natives, but Asian Americans have far more.
also in Asia, there SEEMS to be alot of this situation, but that's just the law of probability. In Britain, Anglo-Chinese refers to the descendents of male Chinese sailors and working class British females from the 19th and early 20th centuries.
For modern day, take a look at Guangdong Province numbers from 2006, when China was just as poor as the Philippines.
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Marriage statistics of Chinese-Foreign relationships in Guangdong
其中广东居民14531人(男性5312人,女性9219人)
外国人及外籍华人3774人
华侨1669人
香港居民6005人
澳门居民2014人
台湾居民1079人
Chinese citizens living in Guangdong: 5312 males, 9219 females
Foreign citizens: 3774
Chinese citizens living overseas: 1669
Chinese residents of Hong Kong: 6005
Chinese residents of Macao: 2014
Chinese residents of Taiwan: 1079
As you see, 90% of "foreign marriages" are actually between Chinese nationals, and 85% between PRC nationals.