Manipulating market supply to artificially increase product prices is an improper and illegal act, which will seriously damage the fair playing field of the market and harm the interests of many market participants. Therefore, this should not be done, and there is no legal way to be allowed. Common market manipulation methods include： 1. **Control production**: Reduce the number of products actually available for sale on the market by restricting production, hoarding, etc., thereby creating the illusion that supply is in short supply to drive prices up. 2. **Monopoly agreement**: Companies collude with each other to reach agreements to limit production and divide markets to manipulate supply and prices. These acts violate relevant laws and regulations such as the Anti-unfair Competition Law and the Anti-monopoly Law. Once discovered, they will face severe legal sanctions, including high fines and criminal penalties. At the same time, they will also cause condemnation of public opinion and damage to market reputation. Market prices should be reasonably formed under the normal action of the market mechanism, based on the real supply and demand relationship, cost and other factors, in order to ensure the healthy and orderly operation of the economy.