This is a transmigration power fantasy that will have you laughing from beginning to end.
The hilarious ignorance of ancient people using modern devices: Li Kui yells "Brother!" at a smart speaker, which replies, "Please give a command." Li Kui snaps, "I'm calling you Brother, and you're still not satisfied?!"
Modern people collectively crumble in the face of ancient martial prowess: A drug dealer sees Lin Chong stop bullets with his bare hands, drops to his knees, and cries, "Grandpa, spare my life!"
The ugly antics of corrupt officials under the influence of drugs: After getting high, Cai Jing writes the words "loyalty and righteousness" and gives them to Song Jiang, who hangs them in the toilet to use as toilet paper.
A fierce clash between the rules of the martial world and modern law: A hero wants to "enforce Heaven's justice" by killing drug dealers, but the police lecture him about "needing evidence": "If you kill them, how are we supposed to convict them?!"
The heroes collectively break down: "It's even harder to get by in this world than it was in the Song Dynasty!"