Siheyuan, I Rely on the Dual System from Another World to Kill Randomly

Accidentally transformed into the unlucky man of the courtyard, he thought he could not escape the fate of being manipulated. Unexpectedly, the sign-in system and the dual system of another world are activated at the beginning. Sign-in will give you cooking skills and ocean, and unlock the entrance to the cross-border space. Sitting on a double golden finger, relive the 1970s, stock up like crazy to get rich, and dominate the entire courtyard.