definition of proletarian

Jiang’s death was accorded the highest level of protocol, with state media referring to him as “a great Marxist and proletarian revolutionist, statesman, military strategist, diplomat, a proven communist fighter, an outstanding leader of socialism with Chinese characteristics”.

 

It is not easy to judge things on the spiritual level,
 but the concept of the proletarian seems to be the only thing
 that can be measured by material.
 To classify Jiang as proletarian , What class am I in?