The [[Horse Lords]] or [[Jade Dragon]] DLCs allow any ruler to build trade posts '''at specific provinces''' along the Silk Road land route between China and Europe. Silk Road trade posts can
only be owned by the owner of a province, and cost 50 gold to build. (Lieges can build and upgrade the trade posts.)
The Silk Road is visible in the Economy and Trade Zone [[Keyboard shortcuts#Map modes|map modes]]. If a Silk Road province is occupied or is being sieged during a war, the value of trade flowing through the province will be reduced by 10% if under siege and 25% for occupation. Both the trade zone controlled by the province owner and the total trade value along the entire route affect income.