The spatial distributions of the kernel density estimation of the thirteen sub-topics are shown in Figure 8. Except for ‘appealing for aiding patients’, ‘seeking medical help’, and ‘seeking relief materials’, the spatial distribution of most topics is similar to the general characteristics of Figure 4b. ‘Fear and worry’ formed high-value areas in Wuhan, Shanghai, Suzhou, Jiaxing, and other cities. ‘Questioning the government and media’ is mainly reflected in Wuhan, supplemented by the Beijing-Tianjin-Hebei transboundary area, east Hubei, the Jiangsu-Zhejiang-Shanghai neighbourhood area, and Guangzhou and Chengdu, two relatively independent high-value areas. ‘Condemning bad habits’ is distributed in dots as a whole. Beijing is a high-value region with prominent dots, and east Hubei, the Jiangsu-Zhejiang-Shanghai cross border area, Guangzhou, and Wuhan are independent high-value regions. ‘Objective comment’ takes Wuhan as a prominent high-value area, supplemented by Beijing, Shanghai, Guangzhou, and other high-value areas. ‘Taking scientific protective measures’ is a prominent spot-shaped high-value area in Beijing, Wuhan, and Shanghai, and the areas within the Beijing-Tianjin-Hebei neighbourhood area, east Hubei, the Jiangsu-Zhejiang-Shanghai transboundary areas are the main nodes in a continuous pattern. ‘Blessing and praying’ is centred on the contiguous areas of Beijing, Wuhan, and Shanghai, while Guangzhou, Chengdu, and Zhengzhou are relatively independent high-value areas. ‘Appeal for aiding patients’ takes Wuhan as the centre of east Hubei as the high-value area, and Beijing, Shanghai, and the neighbourhood area as relatively high-value areas. ‘Willing to return work’ shows that Beijing, Guangzhou, and Shanghai are prominent high-value areas, supplemented by Wuhan, Chengdu, Hefei, Jinan, and other relatively high-value areas. ‘Staying at home and taking necessary precautions’ is led by Wuhan, with Beijing, Wuhan, Shanghai, and Guangzhou as the highlighted high-value areas, and the Beijing-Tianjin-Hebei cross border area, east Hubei, the Yangtze river delta, and the Pearl River Delta as the main nodes, showing a continuous trend. ‘Popularizing anti-epidemic knowledge in family’ is concentrated in Wuhan and its surrounding cities, supplemented by relatively high-value areas such as Beijing, Shanghai, and Guangzhou. ‘Seeking medical help’ and ‘seeking relief materials’ are prominently concentrated in Hubei. ‘Seeking medical help’ appears in Wuhan and spreads to the surrounding area, especially to the east. The overall distribution of ‘seeking relief materials’ and ‘seeking medical help’ showed a similar distribution trend, with Wuhan and its surrounding areas as high-value areas. ‘Appealing for aiding patients’ is mainly distributed in Wuhan, Beijing, Shanghai, and other regions.
