《资治通鉴·汉纪·汉纪三十》
等到王安死了，王莽才派遣使者用王车把王兴、王匡接来，封王兴为功公，王匡为功建公。
及安死，莽乃以王车遣使者迎兴、匡，封兴为功修公，匡为功建公。
When Wang An died, Wang Mang sent an envoy to take Wang Xing and Wang Kuang in a royal carriage and named Wang Xing "Gonggong" and Wang Kuang "Gongjianggong".