Report Summary 1) Report Industry Investment Rating No industry investment rating is provided in the report. 2) Core Viewpoints of the Report - The adjustment of the 14D OMO reverse - repurchase tender method can better stabilize the short - end fluctuations of the yield curve and maintain the abundance of bank system liquidity [2]. - It is expected that 14D OMO operations will be more frequent than before, and the first 14D OMO operation after the change of the tender method may be carried out on September 22, 2025 [2]. - Attention should be paid to real - time DR and CD interest rates rather than privately inquired winning bid rates of 14D OMO, as the latter contains limited monetary policy information and is often lagging [3]. - Moderately narrowing the interest rate corridor can reduce DR fluctuations and improve the efficiency of interest rate regulation, and currently, there are basic conditions to narrow the interest rate corridor by moderately reducing the SLF interest rate [3][4]. 3) Summary by Relevant Catalogs Event - On September 19, 2025, the People's Bank of China announced that, starting from that day, the 14 - day reverse - repurchase operation in the open market would be adjusted to fixed - quantity, interest - rate tender, and multi - price winning bids [1]. Comment - The 7D OMO interest rate is the main policy interest rate in China. The new combination of 7D OMO (fixed - interest, quantity tender) and 14D OMO (fixed - quantity, interest - rate tender, multi - price winning bids) can better stabilize the short - end fluctuations of the yield curve and maintain the abundance of bank system liquidity [2]. - It is expected that 14D OMO operations will be more frequent than in previous years, not limited to before the Spring Festival and National Day. The first 14D OMO operation after the change of the tender method may be carried out on September 22, 2025. In the future, some investors may be interested in privately inquiring about the winning bid rate of 14D OMO, but these rates contain limited monetary policy information, and attention should be paid to real - time DR and CD interest rates [2][3]. - 7D and 14D OMO are the "new partners" for maintaining liquidity abundance, and the interest rate corridor is the "old assistant" for suppressing short - end fluctuations. Moderately narrowing the interest rate corridor can reduce DR fluctuations and improve the efficiency of interest rate regulation. There are two ways to narrow the interest rate corridor: the natural compression when the 7D OMO interest rate and SLF decline together, and the reduction of the spread of the SLF interest rate above the OMO interest rate [3]. - Currently, there are basic conditions to narrow the interest rate corridor by moderately reducing the SLF interest rate. From May to August 2025, the SLF operation volume was much smaller than the inter - bank pledged repurchase trading volume. The minimum value and 10% quantile of the spread between the 7D SLF and DR007 from early 2024 to September 19, 2025, were at a moderate and relatively large level [4].