Intergenerational households often involve children and older adults sharing daily life. Yet, it remains challenging to find shared exercise activities due to the significant differences in motor ability, motivational preferences, and user experience needs. Existing exergames lower the entry barriers through body-based interaction, but screen-based setups restrict play to indoor environments. XR HMDs extend exergames into public contexts, yet the differential impact of VR and MR on intergenerational play remains underexplored. To address this gap, we developed an asymmetric-role XR exergame and conducted a $2\times 2$ within-subjects study with 20 intergenerational pairs (N=40) to explore the effect of Display Mode (VR vs MR) and Environmental Context (Private Space vs Public Space) on their user experience and collaborative performance. This work reveals clear age-related patterns: children exhibited greater engagement in immersive VR environments, whereas older adults preferred MR for improved safety and enhanced visibility of their intergenerational partners. Finally, we offer design guidelines for leveraging complementary strengths of XR display modes and environmental contexts to support inclusive and engaging intergenerational exergames.

Gazelle enterprise are those small- and medium-sized high-tech enterprises that across the death valley of start-up. They have core technologies and good growth, and have been the main powers that lead the advanced technologies. The spatial distribution of gazelle enterprises plays an important role in shaping the economic space of a region or a city. However, the driving mechanism affecting the distribution of gazelle enterprise is unclear. This paper analyzes the spatio-temporal characteristics of gazelle enterprises of Jiangsu, China from 2017 to 2021, and uses geodetector to explore the driving mechanism behind the distribution of gazelle enterprise. The results show that gazelle enterprises present the pattern of cluster. The center moves to northeast firstly, and then moves to northwest. Moreover, the workforce environment, and the scientific & technological innovation environment significantly affect the spatial distribution of gazelle enterprises.