(260518) -- DEYANG, May 18, 2026 (Xinhua) -- People visit the exhibition "Yungang Grottoes: A world heritage site from the Pingcheng era of the Northern Wei Dynasty" at the Sanxingdui Museum in Guanghan City, southwest China's Sichuan Province, May 18, 2026. Presenting over 120 pieces (sets) of exhibits, the exhibition kicked off here on Monday and will last till Oct. 31. (Xinhua/Wang Xi)