Chengde – Shenyang heads next tranche of PDL openings
https://www.railwaygazette.com/news/high-speed/single-view/view/chengde-shenyang-heads-next-tranche-of-pdl-openings.html
It's interesting that high speed rails were not built from Beijing, but from Shenyang or other Northeastern cities. Though I don't know the real reason why they were built in irregular order, it would be aimed at prioritizing rural provinces.