The subindex measuring business activity in the service industry stood at 53.6, up from 53.5 in February.
The study also showed that among those who tested positive, 90 percent reported being unable to work from home. In contrast, among those who tested negative, 53 percent reported no impact on their work or financial stability.
The teacher has been detained on the charge of child abuse, it said.
The study conducted by Tencent Research Institute and Shenzhen University aims to learn about the digital life of people above the age of 55 by analyzing their use of WeChat based on 3,051 cases from 956 families across 58 cities.
The survey showed that landslide areas have been covered by vegetation and that landslides have decreased in the monitoring areas.
The success of this model is manifest in the country's economic performance, transforming China from a largely agrarian economy at the time of reform and opening-up in the late-1970s to the world's second-largest economy.
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The suspects were arrested for various offenses including unlawful assembly, assaulting police and possession of offensive weapons.
The summit brought together leaders and high-ranking officials from some 50 countries and nearly 4,000 representatives from non-government actors including international organizations, enterprises and research institutions.
The sudden shift of policy, which has sent solar stocks into free fall, has drawn protest from Chinese solar firms, saying the new rules came far too soon and might damage a sector that has racked up huge debts.
The study concluded that growing at a slower pace, the world's population is expected to increase by 2 billion people in the next 30 years, from our current 7.7 billion level to 9.7 billion by 2050 and could reach its peak at nearly 11 billion around 2100, according to John Wilmoth, director of the population division of UN-DESA said at a press conference.