Research on the“21st century maritime Silk Road”from the perspective of statistics 并列题名：Research on the“21st century maritime Silk Road”from the perspective of statistics Research on the evolution of state functions from the perspective of Marxist economics Research on the crime of extortion from the perspective of norm theory Research on the evolution of division from the perspective of Marxist economics research on design methods based on the perspective of the future 并列题名：Research on the evolution of state functions from the perspective of Marxist economics Appreciation of the texts in advanced English from the perspective of stylistics Research on the country-of-origin mage from the perspective of legitimacy theory research on the path and mechanism of community co-governance from the perspective of social network