Explanatory nouns: acupuncture, money laundering, pyramid selling, carnival, property management, DJ, PK, auspicious three treasures, defibrillation (medical terminology), RH blood group.

Acupoint walking: refers to some people who have no stable jobs and earn some money by walking around. Now it refers to stars singing and performing everywhere.

Money laundering: There is an allusion. Some gangsters get ill-gotten gains, and in order to hide their eyes and ears, they open laundries. Ill-gotten wealth deposited in the bank can be said to be the proceeds of money laundering, so it is called money laundering.

MLM: Compared with direct selling in shopping malls, it means being sold by one person to another.

Carnival: from the British carnival. Carnival is a free translation of carnival by Hong Kong people. Carnival is a traditional festival as early as in Europe. The predecessor of the carnival is the European and American carnival. Carnival is a free translation of carnival by Hong Kong people.

Property: it is daily management.

Pk: It refers to penalty in football, which is the abbreviation of penalty, meaning one-on-one hit, and the other refers to players fighting each other in online games, which comes from the abbreviation of English Player Killing;

That's all I know. You have a lot of questions. Buy a dictionary.