China debuts train prototype that can hit speeds of 620 kilometers per hour
https://edition.cnn.com/travel/article/china-high-speed-maglev-train-intl-hnk/index.html
One of the technical issues about maglev train is that energy consumption is three times higher than that of high speed train.
So, we shouldn't use maglev train until technology of saving energy is invented.
I wonder why China decided to publicize it at this time?
