Doudian modifying the details affects the weight. Try to avoid pitfalls in the early stage. The most common ones are some "free operation" and "training institutions with no practical experience". If merchants do customer service themselves, they often receive some "free operation, pay after success". These advertisements are not credible. Here, Pinduoduo's cargo assistant hopes that every merchant can remember that there is no free lunch in the world. Sometimes those roads that seem to be shortcuts may be traps.