Chemists, physicists, religious people… all of them could do nothing.Six months later, people became used to the towers and no longer paid them attention.One day, Tang Mo saw a flying insect crash into it instead of going through it. The next day, a sharp and clear child-like voice issued an announcement to all humans.“Ding dong! November 15th, 2017. The earth is online.”The black tower’s three iron-clad rules:1. Everything is explained by the black tower.2. 6 o’clock to 18 o’clock is the game time.3. All players, please strive to attack the tower.