Buzzword - 割韭菜 Garlic Chives or Chinese Chives

 韭菜 - chive, a perennial plant related to the onion and having slender leaves used as a vegetable in China. Chives grow quickly and can be harvested many times during the growing season.

Recently, 韭菜 has a derived meaning - the lowest class people. 割韭菜 (harvesting the chives), meaning - the government make the people suffer by the unfair policies.

Slang:空手套白狼 To Gain lots of Money Without any Investment

空手套白狼(Kōngshǒu tào báilàng) original meaning is: caught the wolf without any tool but the empty hands.  It's an analogy to someone gained lots of money without any Investment. Mostly those businesses are at a high risk, the ways they used are illegal or from the gaps of the law.

例如：他的公司什么也没有，但他空手套白狼，靠倒卖进口汽车指标赚了第一桶金。
e.g. His company doesn't have any assets but he earned his first budget of god by reselling the imported car quotas.