Although there is no price limit system in the Stock Exchange market, there is still a market monitoring mechanism for stock price and trading volume fluctuations. If the Stock Exchange detects abnormal fluctuations in the stock price or trading volume of a listed issuer through market surveillance, or the media publishes reports that may affect the stock price or trading of the listed company, or relevant rumors appear in the market, then in order to maintain a fair and orderly market , the Stock Exchange will contact the listed company. Listed companies must respond immediately and fulfill the continuous disclosure obligations stipulated in the Listing Rules, and promptly publish relevant information to avoid falsehoods in their shares, or any information that should be disclosed under Part XIVA of the Securities and Futures Ordinance. Insider information and ensure fair distribution of such material. If a listed company is not aware of any events or developments that will cause, or may cause, abnormal fluctuations in its stock price or trading volume, it should publish an announcement explaining the situation as soon as possible through HKExDisclosure and its website. If a listed company publishes relevant announcements in a timely manner, there is no need for a temporary suspension or suspension of trading. If circumstances so require, such as discovering or suspecting that changes in relevant stock prices or trading volumes are due to the leakage of certain inside information that is required to be disclosed under Part XIVA of the Securities and Futures Ordinance, the listed company should immediately publish the relevant information or Any inside information required to be disclosed under Part XIVA of the Securities and Futures Ordinance. Otherwise, the listed company's shares may be temporarily suspended or suspended from trading by the Stock Exchange, and trading will be resumed after the announcement is issued. Regarding "abnormal changes in stock price or trading volume" of a listed company, it refers to an abnormal performance in the stock price and/or trading volume of a listed company without obvious reasons. For example, the market falls, but the company's stock price rises sharply, or the trading volume suddenly increases significantly. As for whether the fluctuation of stock price or trading volume is "abnormal", the Stock Exchange will make a judgment with reference to the past performance of the relevant stock, or the performance of other stocks in the industry to which the stock belongs, as well as the overall situation of the market.