The CSI 300 Total Return Net Index is designed to track the performance of leading Chinese "blue-chip" companies. This benchmark specifically focuses on the 300 largest and most actively traded enterprises whose A-shares are traded in Renminbi (CNY) on both the Shanghai and Shenzhen Stock Exchanges. Constituent weighting is determined by free-float adjusted market capitalization, and the index undergoes a semi-annual review and rebalancing process.