Lead-in

Economy is the relationship between production，trade and the supply of money in a particular country or region．Economic development is the progress in an economy，or the qualitative measure of this．It usually refers to the adoption of new technologies，transition from agriculture-based to industry-based economy，and general improvement in living standards．With the popularity of the Internet，it has become easier for individuals to create consistent revenue from their underused assets．Therefore，sharing economy has become a fashion in modern society．In simple terms，sharing economy is a collection of companies providing shared on-demand online goods and services．(https://www.daowen.com)