Group 1 - The core viewpoint is that different regional stock markets do not move in unison, and understanding multiple stock markets allows investors to seize more investment opportunities [1] - Global investment can significantly reduce volatility risk, providing a more stable investment environment [1] Group 2 - To effectively engage in global investment and share in the long-term gains of global markets, there is a free limited-time course available that introduces methods for investing in global stock markets through index funds [2] - Interested parties can obtain this course by adding the "Course Assistant" and replying with "Global" to receive additional resources such as course notes and mind maps for efficient learning [3]