Group 1 - The Inner Mongolia Securities Regulatory Bureau issued a warning letter to Han Junqin for violating regulations by holding a part-time position in a profit-making institution outside of the companies controlled or held by Datong Securities [4] - The actions of Han Junqin were found to be in violation of the "Regulations on the Qualifications of Directors, Supervisors, and Senior Management Personnel of Securities Companies" and the "Supervision and Management Measures for Directors, Supervisors, Senior Management Personnel, and Practitioners of Securities and Fund Management Institutions" [4] - Han Junqin is required to submit a written report to the Inner Mongolia Securities Regulatory Bureau within 30 days of receiving the decision [4] Group 2 - Datong Securities, established in 1988, is one of the earliest securities companies in China, offering a comprehensive range of services including securities brokerage, investment consulting, financial advisory, fund distribution, margin trading, and asset management [5] - The company operates 46 business institutions and 3 holding subsidiaries, with a presence in 17 provinces and municipalities across China [5] - Datong Securities supports the development of the real economy through its full-license comprehensive operations [5]