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'Windmill': China tests world’s first megawatt-level airship to capture high winds
(interestingengineering.com)
This is a most excellent place for technology news and articles.
It's a novel approach, but the Chinese aren't the only ones trying to harvest energy from high winds: https://skysails-power.com/how-power-kites-work/
Promising concept too, but this is 250-500x the scale of that.
What matters is scalability and how much material and cost you need to produce per energy unit. Kites (either parasails or fixed wing) are much simpler, can be scaled up too, and you only need a simple cable that pulls the generator's winch. Overall kites seem much more efficient to scale up.