Estimate Holding Cost Distributions for Chinese Equities

Estimates holding-cost distributions of mainland Chinese A-share equities from daily price, volume, amount and turnover data. Implements the linear turnover-based cost-distribution recurrence of Liu and Wang (2018) , and adds a package-specific exponential-retention alternative and price-allocation choices. Provides optional adjustment factors and initial distributions, offline preparation of 'Tushare' tables, weighted cost summaries and diagnostics for reproducible sensitivity analysis.