Custom Sequence

At the end of mankind, civilization has returned to zero, everything mutates, and knowledge such as technology, medical treatment, and literature is controlled by a few people. This group of people uses a wall to isolate civilization and class. Each wall has a serial number. The smaller the serial number, the more powerful and brutal it is. As a refugee, Chen Adou wants to change everything, he wants to rewrite everything, he wants to customize the sequence, and he does not want to live in an uncivilized refugee village.