The railway company said it has suspended cooperation with Shanghai Xincheng, the company that provided the meals, and has established a group to investigate the food supply chain.
The province, which was grappling with the escalating outbreak, was in desperate need of medical supplies and healthcare workers, many of whom were brought in on chartered flights.
The protesters also hurled gasoline bombs into Tung Chung Station and set fires in Heng On Station.
The rate is estimated to rise to more than 70 percent by 2035, according to the Chinese Academy of Social Sciences. In developed economies, the rate is about 80 percent on average.
The province hit hardest by COVID-19 recently lifted its outbound travel restrictions. A major producer of about half of the country's crawfish has resumed selling the product in the region and across the nation.
The province generated 80 percent of its electricity from hydropower stations during the nine-day period, with the rest produced by solar and wind power facilities.
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The reading fell short of market expectations but still stayed above the boom-bust line of 50 for the ninth straight month.
The provincial government has required all fishing boats to return to ports or sail to safe zones.
The quickened growth in industrial production and sales and the moderate drop in the factory-gate prices of industrial products led to the expansion of profits in June, according to Zhu.
The province also saw growing trade with emerging markets in Latin America and Africa, with an increase of 12.3 percent and 26.1 percent, respectively.