Cheng Guang is also a meta-PI over many Key R&D projects as top cybersecurity dean of SEU and infosec subject matter expert for the "十四五" (China's five-year national development plan):
https://cyber.seu.edu.cn/cg1/list.htm
https://cyber.seu.edu.cn/_upload/article/files/dc/2b/3724c2fd43b48bfb08c352d8bd70/7b47e360-3897-4190-ae92-43abd178d86f.pdf
His research networks / supervision appear fairly broad (he is a professor, after all), but much of the research does seem to be highly focused in this area. Aside from Key R&D, there is a lot of funding from NSFC (National Natural Science Foundation of China) and provincial funding from Jiangsu. Not hugely surprising, considering how crucial these programs are for computer science funding in China in general (esp NSFC). For specific grant numbers, you want to look for 基金项目 on CNKI or in conference listings (NSFC is like 62xxetc for "information science" and 61xxetc for older ICT grants).
In China, juicier grants are available via Cyberspace Administration of China or the Ministry of Public Security, which sometimes get listed in a final report/article/talk as 横向项目 or 横向项目.
Other fun grant programs for senior infosec researchers: 江苏省重点研发计划 (key r&d but regional for Jiangsu) , 江苏省自然科学基金 , 教育部重点实验室 (Key R&D but primarily institutional), 万人计划 , 333工程 (these last two might not be as relevant for your search but are worth noting in this context).
Anyway, tangent, both of the grants you listed seem to be in the same program cluster. I would bet that you could map out much of their research network starting with Cheng Guang, Cao Jie, and Wu Hua, and then just look at the funding acknowledgements of the relevant papers to confirm research focus of the grants.
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