Li Yuan-chia, Untitled, 1959

An unsung hero of Chinese art

Chinese-born Li Yuan-chi died in 1994, leaving thousands of works unsold - but that's about to change, at two upcoming London sales.

Untitled by Hugh Scott-Douglas

Emerging artists' prices crash

Art sellers are bailing on their investments after the emerging-art bubble burst and the resale market for once sought-after artists dries up.