As late as the early 1940s, historians recall porcelain bowls containing rice and chicken being placed before Chinese graves at Olivewood Cemetery in Riverside every March on the day of the Ching Ming Festival, a traditional Chinese festival known as "Ancestor's Day" or "Grave-Sweeping Day." The practice became obsolete when the local Chinese community dwindled. Revived and opened to public participation in 2009 by SOCC, it continues as an annual cultural tradition similar to the Dia de Los Muertos.