Luo Junyi and Jin Qui Bo Yuan are a pair of lovers, and they develop the system A138 together. In an accident, the system exploded. One person lost his memory and another person disappeared. Five years later, Luo Junyi entered the system and the two met again. In order to crack the checkpoints in the system, the two found the answer to the system - the value of the unknown number x...
Intention: Improve thinking ability and bring a sense of picture.