Applicability: For the purposes of these Rules, the term "standard debt asset" means lawfully offered fixed-return securities such as bonds and asset-backed securities, mainly including sovereign bonds, central bank bills, local government bonds, bonds of government-backed agencies, financial bonds, debt financing instruments of non-financial enterprises, company bonds, enterprise bonds, international institution bonds, interbank negotiable certificates of deposit, credit asset-backed securities, asset-backed notes, asset-backed securities listed and traded on a stock market, as well as publicly offered fixed-return securities investment funds (Article 1).