On the 27th , Caritas Ma On Shan Middle School, Kam Ying Road, Hong Kong, was suspended due to the discovery of a student carrying explosives. The explosives seized were TATP explosives. The appearance of this explosive is white crystal with extremely high sensitivity, and it can explode with slight friction. Hong Kong media claimed that the explosive was brought to campus by two high school students who had previously participated in violent demonstrations and was a gift from other violent protesters. When the two brought the explosives back to school, they also asked the chemistry teacher "what is this?"How much does a crypto miner make?