A craftsman of cultural relics restores a painting in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)

A craftsman restores the cultural relics in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)

A cultural relic craftsman restores ceramics in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)

Visitors watch the process of painting restoration at the Cultural Relics Protection Science and Technology Center in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)

Cultural relic craftsmen restore ceramics in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)

A cultural relic craftsman restores a painting in Sichuan Museum, Chengdu, Sichuan, May 18. (Photo: China News Service/An Yuan)