In China, there are indeed different ethnic groups, and the difference between them is no less than between the English and the French. And for Gumilev, fitting China into his theory was, I think, a big problem...
P.S. - everything said about Gumilev is IMHO.
Added after 34 seconds
Read Gumilev
Read Marc Bloch instead.
- Чжуан-цзы
Сильванис