Four Trains a Day on a High Speed Line in and around the Chinese Capital? [09 April 2025]

There's one High Speed line around Beijing which has — just four trains a day — serving Daxing Airport. This has David Feng more than a bit concerned — obviously a bit more than the once-a-week (probably) Parliamentary train on Chiltern Railways between London Paddington and West Ruislip. But is it a new line well used? Well, at least, it's there, good to go, with actual trains in actual operation!...