the only clearly defined factor of left is the believe that every person is borned equal

This is a very controversial statement. The left is usually understood as referring to Socialism, and Individual rights are generally considered a liberal value.

The founding idea of Socialism is common, rather than private ownership. China has a very high degree of public ownership of companies, exercises a lot of control over private enterprises, and has limited private land rights. This is consistent with a Socialist approach. Restricting private ownership of land in particular is as of my knowledge unheard of under right wing governance.

China is very authoritarian and in many ways a poor model for Socialism, but it's way too convenient to simply write them off as secretly-right-wing revisionists