The famous loose black tea with smoky aroma from the highlands of "Wu Yi Shan" (Fujian province, China).
This variety is made from leaves harvested from savage tea bushes.    Taste: litchi and a sweet aftertaste.    Not too saturated, but quite tangible and quite characteristic of the tea variety "Zheng Shan Xiao Zhong".
This variety of Chinese tea is known in Europe under the name "Lapsang Souchong".    And it's the fault (as usual) of the local dialect, in which the pronunciation was, in general, similar to that transcription, but quite different from common in China mainland.