Chinese cut russet silk velvet chair cover for the chair back 18th century, mounted on boa

A Chinese cut russet silk velvet chair cover for the chair back 18th century, mounted on board. The velvet voided to reveal two four clawed dragons, lion dogs mounted and lotus on the seat. The Kang cover with 3 quartered border has a repeating Wan (10.000) motive centered by a floral roundel.