Slavery was abolished in Peru in 1851 which created a high demand for cheap laborers. At the same time, China's economy was doing pretty bad due to internal conflicts and bad administration. read more
Because of the ports in the region, the majority of them came from Guandong where most people are Han. As a result, Peru became a common destination for Chinese migrants and that’s how my grandparents ended there. read more
Why many people identify as Han has to do with the success of china in its history, being able to support large populations and economically being one of the most powerful countries in the world (until the latter Qing). read more
Well, the various Chinese "dialects" are often entirely mutually unintelligible, so linguistically you could say that there's at least as much difference between them as there is between the various Romance languages in Europe, or the various Germanic languages. read more