Based on the background of China's pilot low-carbon city initiative in 2010, 2012, and 2017, this article captures the exogenous change of enterprise labor structure based on A-share listed companies from 2007 to 2019 in Shenzhen and Shanghai Stock exchanges. With the integration of macro data on the city level and micro data on the enterprise level, adopting the time-varying difference-in-differences (DID) model, we found that 1) China's pilot low-carbon city initiative can significantly promote the upgrading of enterprise labor structure; 2) China's pilot low-carbon city initiative can significantly increase R&D investment of listed companies, suggesting that R&D investment is a channel for the impact of China's pilot low-carbon city initiative on enterprise labor structure in the pilot cities; 3) the heterogeneity analysis shows that the labor structure of the state-owned listed companies has been optimized significantly, while the labor structure of the non–state-owned listed companies is not significant. Meanwhile, the labor structure of the listed companies under high-quality government control has been optimized significantly, while the labor structure of the listed companies under low-quality government control is not significant. Overall, our study shows that the pilot low-carbon city initiative has played a governance role in China and optimized enterprise labor structure.

Wolffia Horkel ex Schleid. (Lemnaceae) includes the world's smallest angiosperms. Morphologically, their bodies are extremely simplified, making classification difficult and long-disputed. No reports about the genetic structure of these clonal-dominant aquatic plants have been published until now. In this study, of 247 samples from 42 populations spanning representative locations in China, two chloroplast haplotypes (glo-cp and un-cp) and 66 amplified fragment length polymorphism genotypes were identified. Based on wide sampling, cpDNA haplotypes, and amplified fragment length polymorphism profiles, we found that there are two genetic lineages (glo-and unlineages) of Wolffia species in China. Genotypic and genetic diversity of Wolffia species are high compared with other clonal plants (Simpson's index, D = 0.97; Nei's diversity, H = 0.1835). Different spatial structure patterns were detected between glo-and un-lineages. Positive autocorrelation at short distances (<400 km) and slightly negative autocorrelations at larger distances (>1500 km) were detected within the glo-lineage, but no significant spatial genetic structure was detected beyond 100 km within the un-lineage. Overall, spatial genetic analysis of W. globosa revealed significant autocorrelation within short distances, indicating that restricted gene flow might be one of the most important factors in shaping genetic structure.

Building on the work series of Belitung VR, this article seeks to explore a narrative framework for digital cultural heritage storytelling. Belitung VR is a serious game to disseminate Belitung-related cultural knowledge in VR, where users can freely explore in the reconstructed Arab dhow shipping between China and West Asia to collect clues to the causes of the wreck. The proposed framework consists of narrative goals (the physical and meta-physical), narrative elements (character, world and plot), and narrative grammar (immersion, interaction, rhetoric and factuality). This work can serve as a practice guide and evaluative framework for designers/artists with an aspiration to digitally disseminate cultural heritage.

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