SHANGHAI: China shares slid on Wednesday, as investors booked profits in consumer stocks after the blue-chip index hit a 13-year high in the morning session, while a resurgence of coronavirus cases in part of the country also dimmed sentiment.

At the midday break, China's blue-chip CSI300 index shed 0.21%, with its consumer staples sector down 0.59%.

The financial sector sub-index was higher by 0.29%, the real estate index added 0.3% and the healthcare sub-index was up 0.34%.

The Shanghai Composite index was down 0.17% at 3,522.72 points.

Chinese H-shares listed in Hong Kong fell 0.18% to 10,754.81, while the Hang Seng Index was down 0.87% at 27,410.55.

The smaller Shenzhen index was down 0.9%, the start-up board ChiNext Composite index was weaker by 0.98% and Shanghai's tech-focused STAR50 index was down 0.84%?.

Chinese authorities shut sections of highways running through Hebei province that surrounds Beijing on Wednesday and closed a key long distance bus terminal in the provincial capital Shijiazhuang in efforts to stave off another coronavirus wave.

The province, which entered a "wartime mode" on Tuesday, accounted for 20 of the 23 new locally transmitted COVID-19 cases reported in mainland China on Jan. 5, more than the total of 19 cases in the province in the three previous days.

China's services sector activity expanded at a slower pace in December, a private sector survey showed on Wednesday, as sporadic coronavirus outbreaks tempered the recovery in consumer confidence and weighed on new business growth.

Around the region, MSCI's Asia ex-Japan stock index was firmer by 1.41% while Japan's Nikkei index was down 0.55%.

The yuan was quoted at 6.4594 per US dollar, 0.07% weaker than the previous close of 6.455.