The article explores how trading volume restrictions affect price discovery and spillover dynamics in the Chinese stock index futures market. The researchers conducted a natural experiment during the 7th International Conference on Futures and Other Derivatives to analyze these dynamics. They found that when trading volume restrictions were imposed, price discovery efficiency decreased, leading to increased spillover effects between the stock index futures market and the spot market. This suggests that trading volume restrictions can impact market dynamics and the transmission of information between futures and spot markets.