What I found interesting is that it still takes 15 days for a freight train to do the journey. With the recent $500 billion plan for high-speed rail network in

What I found interesting is that it still takes 15 days for a freight train to do the journey. With the recent $500 billion plan for high-speed rail network in China, surely it also makes sense to modernize this Asia<->Europe track? For example building a dedicated track with standard gauge in Kazakhastan, Russia, or developing a more powerful locomotive dedicated to this.