If the snow turns white and purple, what does that mean? It means there is a chemical reaction! What substance can react with the release of ice and snow (water in plain English) and turn purple? That must be some fairly obvious substance. What substance is it? If there was, it would have been written into the textbook. Who else needs to find out later

Stanford University can't find this experiment. No similar experiment was found in the Nobel Prize.

This is a self-proclaimed Qi Guoli, pretending to be Professor Qi Boli, fooling around and fishing in troubled waters. Don't be cheated!

Professor Zeppelin has nothing to do with this Qi Guoli. Because I was not familiar with Professor Zeppelin, I mistakenly thought that Qi Guoli was Zeppelin.