The "high-speed rail leap" itself has buried long-term security risks, and many technical problems still need to be solved urgently. Therefore, there are serious "systemic problems" in this field, which cannot be completely solved overnight. Wen Guoqing believes that the objective situation of fundamentals determines that the market outlook of high-speed rail concept stocks really lacks "predictability". He frankly holds a "negative view" on the concept plate of high-speed rail, indicating that he is not optimistic for a long time. Remind investors to calmly analyze and avoid risks. In addition, the train is equipped with lightning protection system, and the pantograph system and signal system are equipped with lightning protection facilities. However, the occurrence of small probability events cannot be ruled out, and strong lightning strike will still break through the equipment and cause short circuit. If the accident is really caused by lightning, it at least reveals that the lightning protection system of the railway is still relatively fragile, or that the safety redundancy and reliability of the lightning protection system are not enough.

Second, human factors.

1, the management concept is not perfect.

The development speed of high-speed rail in China is really amazing. What others can do for decades, we only spent 6-7 years. We have taken the lead in the technology of high-speed rail construction, just like our aerospace industry, we are also ahead of the world. However, because the latter is a military industry, the management is definitely high-level, while the railway construction is mainly for civilian use, so the management is much worse. Moreover, because there are still many moths in civil construction, the materials and components used may be mixed with unqualified products, which will have hidden dangers. In addition, there will be such a small problem in the completion acceptance. In order to celebrate quickly, these problems will be hidden. In addition, it is not tested for a long time after completion, and the management is not strict after completion. So accidents will inevitably happen frequently. If analyzed from the existing technical level, various video surveillance technologies and wireless network technologies are very mature now. You can not only see the railway track and the outside of the train in the control room, but also see the cab and each car of the train in the control room. As for the timely signal of train operation, it is completely under the control of the control room and the transmission line can be monitored in time, so it is impossible for the train to have a rear-end collision. Lightning in summer can also be dealt with by our existing lightning protection technology. Speaking of this, I'm afraid there is only one thing that we can't control, that is, sudden strong earthquakes and sudden flash floods, which are irresistible natural disasters for human beings.