You want to buy a bread that costs 20k, but you only have 17k in your pocket, which is clearly not enough to satisfy, and the seller does not want to lower the price, which inadvertently delays consumption. So is there any way to resolve this?

One way is to print more money to distribute. Suppose the price of bread remains 20k after all the additional money is distributed, then there are 2 cases:
Case 1: everyone is issued 1k, meaning that at this point you have 18k and still don't have enough money to buy a 20k cake, and the seller also has an extra 1k without any purpose. This corresponds to the situation of pumping money into the economy without yielding results.
Case 2: everyone is issued an additional 1.5k, meaning that at this point you still do not have enough to buy the cake for 20k because you only have 18.5k. However, the seller agrees to lower the price to 18.5k because the seller is also issued 1.5k. This corresponds to the consumption being stimulated. But there is no incentive to continue producing cakes.
Case 3: Everyone is issued an additional 10k, which means at this point you have 27k. You can buy 1 cake for 20k and still have 7k left. The seller sells the cake for 20k and with the additional issuance, will collect a total of 37k. Thus, both parties are satisfied and have a certain amount of surplus money to motivate them; the buyer has the motivation to work to buy another cake, and the seller has additional capital to create a new cake.
This is a simple example of injecting money into the economy; inflation is not necessarily bad. Inflation is a driving force to stimulate the economy.