每日钉一下（中证800+1000+2000 = 中证全指吗？）

Group 1 - The article emphasizes that different regional stock markets do not move in unison, allowing investors to seize more investment opportunities by understanding multiple markets [2] - Global investment can significantly reduce volatility risk, highlighting the benefits of diversifying investments across different markets [2] - A free course is offered to teach methods for investing in global stock markets through index funds, aiming to share the long-term gains of global markets [2][3] Group 2 - The article discusses the composition of the CSI 800, CSI 1000, and CSI 2000 indices, explaining that they collectively cover over 90% of the market, making them similar to the CSI All Share Index [5][6] - The CSI 800 includes the largest 1-800 A-shares, the CSI 1000 includes the next 801-1800, and the CSI 2000 includes the next 1801-3800, providing a comprehensive view of the A-share market [5] - It suggests that once the number of index funds for CSI 2000 increases, a portfolio based on the combination of CSI 800, CSI 1000, and CSI 2000 could be considered for a full market index fund advisory [6][7]