Choosing an investment country requires considering multiple factors, including political stability, economic development prospects, legal system, market size, and competitive situation. Here are some specific suggestions:

1. Political stability: Choosing a country with political stability, sound legal system, and good social order results in relatively low political risks.

2. Economic development prospects: Choosing countries with high economic growth potential, large market size, and strong consumption power will result in relatively high returns on investment.

3. Legal system: Choosing a country with a sound legal system and protected intellectual property rights can effectively protect the rights and interests of investors.

4. Market size and competitive situation: Choosing a country with a larger market size and relatively good competitive situation can obtain greater market share and better development opportunities.

5. Investment Policy: Understand the investment policies and restrictions on foreign investment in the selected country, as well as the preferential policies and support measures provided by the government to investors.

6. Cultural Differences: Consider the cultural differences and language barriers of the selected country, understand the local business culture and habits, in order to better integrate into the local market.

Taking into account the above factors, investors can more accurately choose the investment country that is suitable for them.