"Precious metal investment" is still a good choice now. The precious metal investment market has huge potential. There are many varieties and tools for precious metal investment, such as gold, silver, palladium, etc. Investors can choose according to their own risk preference and investment objectives. At the same time, the flexibility and diversity of precious metal investment also make it a popular investment method.

Expertise in precious metals investing can be learned through:

1. Read relevant books and articles: You can read professional books and articles on precious metal investment to understand the history, current situation and future trends of the precious metal market, as well as the characteristics and operating methods of various investment varieties and tools.

2. Participate in professional training courses: You can participate in professional training courses in precious metal investment to understand the professional knowledge and skills of the precious metal market, as well as investment strategies and risk management methods.

3. Watch professional TV programs: You can watch professional TV programs on precious metal investment to learn about market dynamics and trends, as well as investment skills and methods.

In short, learning the professional knowledge of "Precious metal investment" requires continuous accumulation and practice. At the same time, you need to maintain sensitivity and alertness to the market, and master correct investment strategies and risk management methods.