On December 15, financial authorities reported that the National Association of Financial Market Institutional Investors (NAFMII) has initiated a self-regulatory investigation into Postal Savings Bank Of China Co.,Ltd. (PSBC).

The investigation follows allegations that PSBC violated principles of fairness, impartiality, and due diligence during its underwriting and issuance of debt financing instruments. The probe is being conducted in accordance with the Self-Disciplinary Punishment Rules of the Interbank Bond Market.

This development comes as regulatory scrutiny intensifies over compliance in China's financial sector.