It is unreliable because the fees are too high. Pinduoduo’s one-to-one training costs 2,000 yuan per month, which is too high. At the same time, one-to-one training is taught online, which cannot achieve the purpose of teaching. Because of limited time, it is impossible to understand in a short time, so it is unreliable. When training in daily life, you should look for original big brand training companies for training