There are some means of hiding improper profits and evading taxes by using complex corporate structures, but these actions are illegal and not allowed. Some common complex operations of this kind include: 1. **Setting up shell companies in low-tax or no-tax areas**: Transferring profits to these companies, taking advantage of local preferential tax policies or even tax loopholes to hide profits and not paying due taxes. 2. **Multi-layer nested corporate structure**: Through complex equity relationships and corporate hierarchical settings, the flow of funds and sources of income are obscured, making it more difficult for tax authorities to track and verify. However, tax authorities have been strengthening supervision and anti-tax avoidance measures, identifying and combating such tax evasion through advanced data analysis, international tax information exchange and other means. With the continuous improvement of the tax system and regulatory system, attempts to illegally evade taxes through such complex structures will eventually be exposed and subject to legal sanctions. Any illegal tax planning behavior faces huge legal risks, and enterprises and individuals should abide by laws and regulations and pay taxes in accordance with the law.