China News Service, Beijing, September 3 (Reporter Xia Bin) Yang Zhe, deputy director of the Public Company Department of the China Securities Regulatory Commission, revealed when attending a regular press conference in Beijing today that in terms of trading systems, the Beijing Stock Exchange insists that the selection layer is more flexible. The trading system implements continuous bidding transactions. There is no limit on the rise and fall of new shares on the first day of listing, and the limit on the rise and fall is 30% from the next day to increase market flexibility, adhere to an appropriate innovative management system for investors, promote a balanced trading force, and prevent Market speculation.