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At the same time, changes in news at home and abroad will also have an important impact on A shares. Internationally, the results of monetary policy meetings in major economies and the latest progress in international trade negotiations may trigger global market fluctuations, which will then be transmitted to the A-share market. For example, if the Fed releases a dove signal, it will help global funds to return to emerging markets, including the A-share market, and provide external assistance for the index to go up. In China, industry-level policy news, such as the adjustment of centralized purchasing policy in pharmaceutical industry and the continuation or optimization of subsidy policy in new energy automobile industry, will directly affect the trend of related industry sectors, and then have a chain reaction to the pattern of the whole A-share market.(B) Macro policies and news expectations(B) Macro policies and news expectations

From the perspective of capital flow, if the market as a whole shows a rebound trend tomorrow, it is expected that some off-exchange funds will gradually flow in, especially the institutional funds that have been waiting and seeing in the early stage may increase the allocation of high-quality blue-chip stocks and leading enterprises in growth stocks. In the process of market decline, funds may flow from the high valuation plate to the low valuation defensive plate or the early oversold plate to seek hedging and arbitrage opportunities.From the internal structure of the market, the phenomenon of plate differentiation is more prominent. The weighting sectors such as finance in early trading once drove the index to open higher, but the follow-up of other sectors was weak. On the one hand, science and technology growth sectors, such as artificial intelligence and semiconductors, which had a large increase in the previous period, are facing profit-taking pressure. With the recent gradual increase in the valuation of related sectors, some investors choose to lock in profits, and funds flow out of these high-valuation sectors, which has a certain impact on the overall popularity of the market. On the other hand, the traditional cyclical sectors, such as steel and coal, are relatively depressed due to multiple factors such as overcapacity, environmental protection policies and fluctuation of downstream demand, and failed to form effective support after the index opened higher, resulting in the lack of core driving force for sustained growth in the market, and finally moved towards a low trend.(B) the internal structure of the market differentiation

(C) financial and emotional factors(A) the perspective of technical analysisFirst, today's A-share three major indexes opened higher and went lower.