A White friend of mine recently asked me this question. The answer is simple and straightforward: Chinese people wish to return to their family and friends (and the people of their village if they are rural people). Chinese traditional philosophy stresses family and social relations. Being with others whom we are familiar with gives us a good feeling. We long back to that familiarity once we are abroad. Fewer Westerners would travel around or move abroad if they had a traditional philosophy which stressed family and social relations more. I feel that Westerners can benefit from Confucianism, at least if they are open-minded to its original, authentic and traditional form. I am not talking about some sort of liberal or New Age rip-off of Confucianism, but the real thing.
The White race is suffering from extreme individualism. The development of the individual is important. However, his or her individual development should not be to the detriment of the race. Racial development is also important. There should be a balance between individualism and collectivism, otherwise the individual will not be able to survive relying on his or her racial brethren and otherwise the race will not be able to survive either. A race needs the support of its individual members.
To put that in stronger words, absolute loyalty to racial purity is the sole demand on which the survival of a race depends. Racial purity and racial existence are practically synonymous, because a group cannot be sustained without securing its own continuity by bringing reproductive/sexual behaviours under group control. This is also in the interest of the individual: the individual is provided with a racial group that he can rely on. It is a scientific fact that mixed-race people feel excluded from their ancestral groups and they experience identity problems. They do not have a racial community to rely on, maybe except for their parents. However, it has been found that racially pure parents also tend to be less altruistic towards mixed-race children.