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Chengdu Airlines has started to use the ARJ21 in three new domestic regional air routes for its 2018-2019 winter and spring flight schedule, said the state-owned Commercial Aircraft Corporation of China (COMAC).

Children's books, which accounted for 27.38 percent of overall sales, continued to top the best-selling categories, followed by social science at 25.57 percent. Textbooks, reference books and test guides came in third, accounting for 15.79 percent of the company's book sales.

Cheng said that on the surface the companies put out convincing arguments, displaying their products, in their pitch to investors.

Chief Executive Carrie Lam Cheng Yuet-ngor had dismissed similar suggestions last year, saying that it might prompt a wave of judicial reviews against the government and would therefore be inefficient at increasing land supply.

Chen Tao, an analyst at the Beijing-based consultancy Analysys, said as consumers pay more attention to the quality and value of products sold on the e-commerce platform, Liu's incident will not have a direct influence on the daily operation of the company.