Study on the group of Manchu poets in the modern times 并列题名：Study on the group of Manchu poets in the modern times a study on the Xiahe urbanization process since modern times Study on the Kailuan coal mines in Chinese modern times Study on the group of rickshaw drivers in modern Shanghai Study on the poetess of modern times Report on the trade of Chefoo Customs in modern times 并列题名：Study on the Kailuan coal mines in Chinese modern times Interpretations in the modern times interpretations in the modern times