Li Shi's Detective Collection

The person in the book is named Li Shi and lives in Tiangang City. He had a black polo coat, a blue scarf, and a deerstalker hat that his mother wouldn't let him wear. He has an uncle who is in the criminal investigation detachment of the city bureau. He just wanted to take some photos, and he ran into his first case. Later came the second, third... I don't know why, but these things always happen to him. Maybe it's because the city where he lives has a river called Gushui, which hides more things than the mud at the bottom of the river.