From Jailer to the Strongest Imperial Guard

Zhao Wuji once had a bright future ahead of him, but transmigrated into the Ming Dynasty as a jailer in the imperial prison. Using modern criminal investigation techniques, he cracked a locked-room murder case and earned the admiration of a thousand-household commander of the Embroidered Uniform Guard. How will he use the opportunities and methods at his disposal to become an unshakable force?