When he was twelve years old, Xiao Qituo, who lost his mother, met Qi Zhoudu, that gentle and cheerful light.
Qizhoudu adopted Xiao Qizhuo, and the two lived together. Later, Xiao Qizhuo became a policeman like Qizhoudu, and the two of them solved each case together...
Intention: Those dusty cases will eventually come to light