Favorable policies frequently released, why does the market surge and then fall back?

The market opened higher in the morning but later fell back, with the three major indexes narrowing their gains. More than 3400 stocks in Shanghai, Shenzhen and Beijing saw gains, with a total turnover of 989.2 billion in the morning. With favorable policies coming out frequently, why did the market rise and then fall back? Zhang Cuixia, Chief Investment Advisor and Chief Mentor of the Investment Education Department at Jufeng Investment, believes that filling the gap in the morning is a good thing. Xie Aimin, of Shenzhen Gaoping Juneng Capital, believes that the long-short structure results in different benefit expectations, and predicts that the market will continue to fluctuate and rise in May. Zhou Jian of Galaxy Securities, on the other hand, believes that the market is still stuck in a range-bound consolidation pattern due to insufficient trading volume.