Question: The Yiwu - Madrid Railway line is one of the routes that are rail links between what two land masses?
Sentence (from "Yiwu–Madrid railway line"): (Other city pairs connected by regular freight trains running between China and Europe include e.g. Lianyungang and Rotterdam, or Yiwu and Warsaw; as of 2016, at least 12 Chinese cities and 9 European ones were connected by similar trains.)
Relevant evidence: No