Nit: Western (black) tea is 紅茶 hongcha, lit. "red tea". Chinese black tea refers to fermented teas like pu-erh, which are not the same thing.
Translating the article: Pu-erh (chin. 普洱茶, pǔ’ěr chá) – a kind of tea that is classified as red tea in Poland (black tea in China since the Chinese classify the tea according to the colour of the brew, as opposed to Europeans who classify tea according to the colour of dried leaves).