please summarize the following in at least 1500 words include title, abstract, main text and conclusion

1. On February 24, 2021, the Hong Kong stock market planned to raise the trading tax for the whole Hong Kong stock market (In its 2021-22 budget, the Hong Kong government announced that stamp duty on stock transfers will increase to 0.13% from 0.1%). Hong Kongs markets tumbled following the trading tax hike announcement.

Question: try to analyze risk involved in this issue and the impact on stock market return. How can we manage the risk involved in this issue and why?