The construction of nature reserve system with national parks as the main body is a major initiative to implement the idea of ecological civilization, and an important practice area for Chinese modernization of harmonious coexistence between human beings and nature, and thus has received multidisciplinary attention from ecology, geography, economics, law, sociology and other disciplines. In order to coordinate the human-land relationship and garden-land relationship of the nature reserve system, and to promote the theoretical innovation, governance optimization and upgrading of the legal system guarantee in the construction of China's nature reserve system, we have invited eight experts in the nature reserve related fields to carry out interviews. The interviews focused on four aspects, namely, Chinese modernization, innovation of theoretical system and methods, legal system guarantee and international compliance, with the theoretical understanding and practical innovation of the governance of China's nature reserve system as the core, and explored several aspects of the construction of the nature reserve system with national parks as the main body: the understanding of the complex human-land and garden-land relations and its complexity coping strategy; the management efficiency of the nature reserve system; the strategy of improving the management efficiency of the nature reserve system; how the construction of China's nature reserve system can demonstrate the advantages of Chinese modernization by linking it with the implementation tasks of important international conventions; and the innovative role of the legal system in coordinating the relationship between people and land, and the relationship between parks and the land. Summarizing the main views of the experts, we can draw the main conclusions: (1) The construction of the nature reserve system, with national parks as the main body, needs to respond to the governance requirements of the Chinese modernization of the interaction between human beings and nature, which is a harmonious coexistence of human beings and nature, in the aspects of maintaining national ecological security, guaranteeing the supply of high-quality ecological products, as well as coordinating the relationship between the reserves and their surroundings, in order to achieve the unity of "ecological protection, green development and improvement of people's livelihoods". (2) Coordinating the relationship between people and land is the key to promoting the modernization of the governance of national parks, focusing on the three core issues of the relationship between people and land, the relationship between parks and land and the synergy of the inter-provincial level, and defining China's national parks governance model as "integrated governance based on the synergy between the central government and the local governments", and through the design of effective mechanisms. (3) The synergy between ecological protection and community development in nature reserves requires further research on the important role of biodiversity in human society, and Nature-based Solutions are conducive to the formation of inclusive governance in protected areas. (4) The construction of a unified, standardized, and efficient national parks system requires the improvement of the leadership system and the development of a system for promoting the reform of the national parks system in a coordinated manner, leadership system and working mechanism for the reform of the national park system, forming a community of interests in the park and deepening the degree of integration between the park and the land. (5) The development of new quality productive forces is necessary to deal with the relationship between people and the land and the relationship between the park and the land, and the model of harmonious coexistence between human beings and nature that relies mainly on the market economy not only embodies the characteristics of the Chinese modernization, but also contributes to the mainstreaming of the work of the Convention on Biological Diversity in the work on biodiversity, and the formation of an internationally applicable model of biodiversity. (6) Cracking the problem of "human-land constraints" and properly handling the "park-land relationship" requires a top-to-bottom legal system to regulate national parks and escort the standardized use of natural resources. (7) The Belt and Road Initiative and the construction of ecological civilization complement each other, and China's nature reserve system can help the Global South to realize the equal importance of protection and development in global compliance, and provide Chinese wisdom for the construction of a community of ecological destiny for mankind.