My mother traveled to Japan with a tour group, afraid of being fooled by the tour group to go shopping. How to persuade her to spend rationally?

There is no way to persuade. If you don't follow, middle-aged and elderly people are likely to listen to deception and be brainwashed into shopping. The safest way is to give them a reliable tour group. Don't be greedy and cheap. Find large travel agencies, such as China Travel Service and Caesar. Although their tour groups will also take you shopping, they rarely ask you the minimum requirements and take the tour group to the black shop. Of course, the tour fare is also higher than others, about 5K-8K-8 K. The safest way is for you to follow, because even a big travel agency can't guarantee that there will be no problems for tours everywhere, but it can only be said that it is much better than a small travel agency.