With frequent changes in cryptocurrency regulatory policies globally, in the short - term, if a country tightens regulations, such as imposing stricter trading limits, the trading volume in that country may drop by 30 - 50%, and the price of cryptocurrencies may decline by 10 - 20% as investors become more cautious. If regulations are relaxed, trading volume may increase by 40 - 60%, and prices may rise by 15 - 25%. In the long - term, stable regulatory policies can provide a more certain environment for the market to develop. For example, a country with clear and stable regulations may see a 20 - 30% annual growth in its cryptocurrency market, while regulatory uncertainty may limit growth to 5 - 10% or even cause market contraction.