I have eaten at Dian Zhengxian several times, and this time I can finally clarify the value of this restaurant - not raw food, but cooked food!
This seems to be a more upscale sushi restaurant in the Zhengxian Group. However, after actual experience, I found that its strength is that every meal ordered on the mobile phone is delivered immediately, and will be delivered to your seat soon via the "Shinkansen train", making the ordering experience faster.