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Highlights from chinadaily.com.cn

Pictures: Many primary schools in Putian, Fujian province, opened Puxian Opera classes to enrich school life and promote the local culture from the Tang Dynasty (AD 618-907). The opera was graded as a national nonmaterial cultural heritage in 2006.

Bilingual: People who go to the toilet in the middle of the night are less productive at work, a study suggests. Getting up overnight to use the bathroom has a bigger impact on a person's work than asthma or some chronic lung diseases, experts said.