On the day he was expelled from the Chinese Academy of Sciences, Shen Tinglan caught a two-meter-diameter eye in Tianchi, Changbai Mountain. His bionic left arm began to resonate - it was the key left by the previous civilization.
The underground river network connects 17 nodes around the world. The sun is the gardener and the earth is the petri dish. After 72 hours, the third "pruning" will come, and all mankind will be deleted.
Answer 17 questions incorrectly and the earth will restart.
And the only "calculator" who can calculate arithmetic is a former scientist who is regarded as a madman by the whole world.
