The ancestors invented gunpowder, but we used it to make firecrackers, while foreigners used it to make cannons, and then used those cannons to bully us. This, one must admit, is quite a sorrow.
So, how do these high-tech glasses work? The black market not only sells a pair of cheating glasses but also includes the answers to the college entrance exam questions. Of course, the exam papers are strictly guarded, and it's impossible for them to get the papers in advance.
But they send someone to the exam hall to take the college entrance exam. This person scans the questions and sends them outside, where "experts" quickly solve them and then transmit the answers to the students who bought the cheating glasses.
Each person outside handles only one question, or a few people handle one question, so their solving speed is very fast, giving them plenty of time to transmit the answers to the buyers of the glasses.
