Impact of China's protectionist policies on the market capitalization of China’s high-tech companies

In my research I discover the impact of China's protectionist policies on the market value of Chinese technology companies. The presented dataset covers the period from 2014 to 2023 and contains stock quotes from 14 Chinese technology companies and 3 market indices: Shenzhen Component Index, Shanghai Stock Exchange and Hong Kong Stock Exchange. In the time period I mentioned above, I’ve also studied the impact of 20 laws that could potentially have an impact on the capitalization of Chinese technology companies.