Trịnh Châu-Châu Âu
Trịnh Châu -> Hamburg / Munich / Liege (Małaszewicze-Warsaw-Prague-Duisburg-Paris-Milan-Lyon-Helsingborg-Budapest-Brest-Minsk-Moscow-Petersburg)
Châu Âu-Trịnh Châu
Hamburg / Munich / Liege -> Trịnh Châu (Małaszewicze - Warsaw - Prague - Duisburg - Paris- Milan - Helsingborg - Budapest - Brest - Minsk - Moscow - St. Petersburg)