Lao Zhou, who sells pancakes, is notified by his landlord that the annual rent is increasing from 130k to 200k, and if he won't rent it, he can get lost. Lin Yue, who just graduated from college, steps forward, "I'll rent it, I'll pay the 200k, and then sublet it to you for 100k." Everyone thinks he's out of his mind. Until 100k, 200k, and 400k hit his bank account, and the landlords across the city go crazy, "How do you get richer the more you lower prices?!" Lin Yue smiles and says nothing; my system: however much is lowered, that much is rebated.