In Hong Kong, four students ( aged between 17- 21) have been sentenced for planning bombs in public places. Under the national security law, one of them is sent to prison for more than five years. Other three of them will be sent to juvenile rehabilitation centre. Those boys were a part of a group called returning Valiant. They were against the recently imposed security laws. They planned to make bombs using the explosive triacetone triperoxide, or TATP. Before they could plant their idea in reality efficiently, Hong Kong’s national security police arrested them in that year, in July. The elder one among the four boys was the main culprit as he was involved in renting the room and other required matters for executing this devastating plan. People in authority are stating that it is so much required to take stringent actions and make the rules stronger for preventing any such incidents to happen in the future