Corporate managers may use internal manipulation and false accounting to cover up long-term financial misconduct in the following ways: 1. **Manipulation of financial statements**: Managers can beautify financial statements by adjusting the recognition time of income and expenses, recognizing income earlier or delaying expenses. This "accounting game" can make the company look financially healthy in the short term. 2. **Fictitious transactions**: By forging sales invoices, contracts or other documents, managers can construct non-existent sales revenue, thereby inflating revenue in the financial statements. 3. **Exploitation of related-party transactions**: Managers may conduct fictitious transactions with related companies and artificially set unreasonable transaction prices to affect the true situation in the financial statements. 4. **Inappropriate capitalization of costs**: Expenditures that should be listed as current expenses are incorrectly recorded as assets, delaying the recognition of expenses, and can also increase profits in the short term. 5. **Hidden liabilities**: By not disclosing or improperly handling certain liabilities, managers can conceal the company's actual financial pressures. For example, not listing certain lease liabilities or litigation liabilities on the balance sheet. 6. **Lack of internal control**: If a company’s internal control mechanism is not sound, managers can take advantage of this to commit fraud. For example, management may collude with employees in the finance department to tamper with financial data. 7. **Use of complex accounting estimates**: By using complex accounting estimates and judgments, managers can manipulate financial reporting results. For example, assuming that the bad debt provision for accounts receivable is insufficient will affect the reporting of profits. 8. **Audit cover-up**: Managers may provide false or misleading information to internal or external auditors to cover up improper behavior, and may even exert pressure during the audit process or influence the audit results. In the long run, these behaviors may not only cause the company to face legal and reputation risks, but may also have a serious impact on the company’s long-term development. Companies should establish a sound internal control system and compliance mechanism to prevent and promptly detect these improper behaviors.