 For his "On Gold Mountain" exhibition at the Asian Art Museum, located in San Francisco, in 2008, he used rocks selected from the foothills of the Sierra Nevada to create his sculptures, "alluding to the nineteenth-century Chinese immigrant experience of mining gold during the California gold rush.Both the actual rocks and their stainless steel versions will be exhibited", according to the museum.He also created as city-scape of San Francisco using all steel items, such as rocks, mirrored surfaces, silverware, and stainless steel pots and pans.