Barley domesticated in China 7000 BC

Barley seems to be domesticated in Northern China also. And that's different to wheat, that is domesticated only in the Fertile Crescent:

Over the past decades, archaeologists have unearthed the earliest remains of domesticated barley at sites in the Fertile Crescent that date back 10,500 years. But there is also evidence for barley cultivation about 9000 years ago at sites further east in Central Asia. (...)
Evolutionary biologists Peter Morrell and Michael Clegg (...) sequenced genes of wild and domesticated barley from the two regions. (..) Morrell and Clegg conclude that barley was domesticated at least twice, first in the Fertile Crescent and then between 1500 to 3000 kilometers further east in Central Asia. (...)