dá luó sī zhī zhàn
Battle of Talas (751), military engagement in the valley of the Talas River 塔拉斯河[Ta3 la1 si1 He2], in which Arab forces defeated Tang armies, marking the end of Tang westward expansion
怛
dá
distressed
罗
luó
gauze
斯
sī
abbr. for 斯洛伐克[Si1 luo4 fa2 ke4]
之
zhī
(possessive particle, literary equivalent of 的[de5])
战
zhàn
to fight