China is making less than 1% green hydrogen right now, if they really can get it to 10% by 2030 id be very happy. But as far as I can see from that report, the plan is "invent some technology that makes this more efficient". I think will happen eventually just not predictably enough to make a plot out to 2060 like hydrogen will be a good idea compared to other renewable technologies that will also advance in that time period.
But anyway China is taking green energy seriously so they might as well try everything.