Time-sharing breakthrough has the following meanings: 1. "Sudden" signal: Choose stocks with continuous inflow of funds, rising volume and price and breaking through the pressure level during intraday shock consolidation, suggesting a rare opportunity for short-term strong stocks to chase up. 2. "Product" signal: Choose stocks with stable inflow of large single funds in early trading and accumulated upward momentum, suggesting that short-term strong stocks are very valuable callback buying opportunities.