4.1.1 Investors can use the same securities account to purchase securities at different securities business offices of a single or multiple members.

4.1.2 The securities purchased by investors can be entrusted to be sold through the trading unit that originally purchased the securities, or they can issue a custody transfer instruction to the trading unit that originally purchased the securities. After the custody transfer is completed, the transfer The entered trading unit is entrusted to sell.

The specific regulations for custody transfer shall be formulated by the registration and settlement institution designated by the Exchange. 4.2.1 The opening price of a security is the first transaction price of the security on that day.

4.2.2 The opening price of securities is generated through collective bidding. If it cannot be generated through collective bidding, it is generated through continuous bidding.

4.2.3 The closing price of securities is generated through call auction. If the closing call auction cannot produce a closing price or no closing call auction is conducted, the volume-weighted average price of all transactions one minute before the last transaction of the security on that day (including the last transaction) will be the closing price.

If there is no transaction on the day, the previous closing price shall be the closing price of the day. 4.3.1 The Exchange implements listing and trading of listed securities.

4.3.2 If a security’s listing period expires or it no longer meets the listing conditions in accordance with the law, the Exchange will terminate its listing and trading and delist it.

4.3.3 If abnormal trading behavior or circumstances specified in Article 6.1 occur in securities transactions, the Exchange may suspend trading in the relevant securities, issue an announcement, and publish relevant transactions, shares and fund shares as necessary. Statistics. Parties with disclosure obligations shall make timely announcements in accordance with the requirements of the Exchange.

The specific trading suspension and resumption time shall be subject to relevant announcements.

4.3.4 If the following circumstances occur in the trading of stocks without price limit, the Exchange may implement temporary intraday trading suspension measures:

(1) The intraday transaction price is higher than If the opening price rises or falls by 10% or more for the first time on the day, the temporary trading suspension time is 1 hour;

(2) If the intraday transaction price rises or falls by 20% or more than the opening price on the day for the first time, Temporary trading suspension until 14:57;

(3) If the intraday turnover rate reaches or exceeds 50%, the temporary trading suspension time is 1 hour.

The specific time of the temporary trading suspension during the session shall be subject to the announcement of the Exchange. If the temporary trading suspension time exceeds 14:57, trading will be resumed at 14:57 and a resumption call auction will be conducted for the accepted orders, followed by a closing call auction. .

The Exchange may adjust relevant indicator thresholds based on intraday trading conditions, or take further intraday risk control measures.

4.3.5 When a security is suspended from trading, the market quotations published by the Exchange include information about the security; after the securities are suspended from listing or delisted, the market quotations do not contain information about the security.

4.3.6 If securities are suspended from trading before 9:25, an opening call auction will be conducted for accepted orders when trading resumes on the same day, and trading will continue on the same day after trading is resumed.

If securities are temporarily suspended from trading at 9:30 or thereafter, an intraday call auction will be conducted for accepted orders when trading resumes on the same day, and trading will continue on the same day after trading is resumed.

During the trading suspension period, you can declare or cancel your declaration.

During the suspension period, the call auction reference price, matching volume and unmatched volume will not be revealed.

4.3.7 The listing, delisting, suspension and resumption of trading of securities shall be announced by the Exchange or the securities issuer.

4.3.8 Other regulations on the listing, delisting, suspension and resumption of trading of securities shall be implemented in accordance with the Exchange’s listing rules and other relevant regulations. 4.4.1 In the event of equity distribution, transfer of reserve funds to share capital, rights issue, etc. of listed securities, the Exchange will treat the securities as ex-rights and ex-dividend on the trading day following the equity registration date (the last trading day for B shares), unless otherwise specified by the Exchange .

4.4.2 The formula for calculating the ex-rights (dividend) reference price is:

Ex-rights (dividend) reference price = [(previous closing price - cash dividend) + rights issue price × share change ratio 〕÷(1+share change ratio)

When a securities issuer deems it necessary to adjust the above calculation formula, it may submit an adjustment application to the Exchange and explain the reasons. With the approval of the Exchange, the securities issuer shall announce to the market the ex-rights (dividend) reference price calculation formula applicable to the ex-rights (dividend).

4.4.3 For securities trading on the ex-rights (dividend) day, the ex-rights (dividend) reference price will be used as the basis for calculating the increase or decrease, unless otherwise specified by the Exchange. 4.5.1 During the delisting consolidation period, the stocks of listed companies will be traded on the delisting consolidation board and will not be displayed on the main board, small and medium-sized enterprise board or GEM market quotations.

For listed companies whose stocks are traded on the delisting consolidation board, their convertible corporate bonds, warrants and other derivatives may be traded on the delisting consolidation board at the same time. Relevant transaction matters shall be separately stipulated by the Exchange and submitted to the China Securities Regulatory Commission for approval.

4.5.2 The Exchange imposes a price limit on price increases and decreases for transactions during the delisting period, and the price limit is 10%.

With the approval of the China Securities Regulatory Commission, the Exchange may adjust the price limit ratio for stock trading during the delisting period.

4.5.3 During the stock delisting period, the Exchange will announce the names of the five member securities business departments or trading units with the largest buying and selling amounts on the day and their respective buying and selling amounts. .

4.5.4 Transactions during the stock delisting period are not included in the calculation of securities public information disclosure and abnormal fluctuation indicators stipulated in Chapter 5 of these rules.

4.5.5 Transactions during the stock delisting period will not be included in the calculation of the Exchange’s index, and the trading volume will be included in the total market trading volume on that day. 4.6.1 If the CSI 300 Index encounters the following circumstances, the Exchange may suspend the auction trading of relevant securities on that day (hereinafter referred to as the "index circuit breaker"):

(1) The CSI 300 Index is higher than the previous one If the closing price of a trading day reaches or exceeds 5% but does not reach 7% for the first time, the index circuit breaker time will be 15 minutes. If the index circuit breaker time exceeds 11:30, the calculation will continue from 13:00. If the circuit breaker time exceeds 14:57, trading will resume at 14:57 and the closing call auction will be held. However, if the circuit breaker is triggered at or after 14:45, the index circuit breaker will be triggered to 15:00, and trading will not resume on that day.

(2) If the CSI 300 Index rises or falls by 7% or more compared to the previous trading day's closing price, the index circuit breaker will be set to 15:00, and trading will not resume on that day.

If the situations (1) and (2) occur before 9:30, the index circuit breaker will be implemented at 9:30. No index circuit breaker will be implemented from 14:57 to 15:00.

The specific implementation time of the index circuit breaker shall be subject to the announcement of the Exchange.

4.6.2 If the trading day of the Exchange is the delivery day of the stock index futures contract, and the index circuit breaker time exceeds 11:30 on that day, trading will resume at 13:00; between 13:00 and 15:00 on that day, The Exchange does not implement index circuit breakers.

The delivery date of the stock index futures contract referred to in this article refers to the SSE 50 Index futures, CSI 300 Index futures, CSI 500 Index futures listed and traded on the China Financial Futures Exchange, as well as other stock index futures specified by the Exchange. The delivery date of the contract.

4.6.3 The securities types for which the Exchange implements index circuit breaker include stocks, related fund types, convertible corporate bonds, exchangeable corporate bonds and other securities types recognized by the Exchange. For details, please refer to the Exchange’s announcement. .

4.6.4 During the index circuit breaker period, investors can declare or cancel their declarations. When trading is resumed, the Exchange will conduct a call auction for the accepted orders and then continue trading on the day.

The call auction during the index circuit breaker period and when trading resumes does not reveal the virtual reference price, matching volume and unmatched volume.

4.6.5 During the index circuit breaker period, the resumption of trading of relevant securities will be postponed until the end of the index circuit breaker.

4.6.6 If the index circuit breaker reaches 15:00, the closing price of the relevant securities will be the volume-weighted average price of all transactions one minute before the last transaction of the security on that day (including the last transaction). If there is no transaction on the day, the previous closing price shall be the closing price of the day.

4.6.7 If the index circuit breaker reaches 15:00, no block trading of relevant securities will be conducted on that day.