The sharing economy refers to the use of online third-party platforms to realize the socialization of production factors based on the temporary transfer of idle resource use rights, improve the use efficiency of existing assets to create more value, and promote the sustainable development of society and economy. According to the above definition, Which of the following economic activities are not part of the sharing economy:. ['Wang orders a car to the airport on a network platform, convenient and quick.', 'Li borrowed stocks on a certain online platform and got expected income.', 'Book a homestay on a certain internet platform before traveling, and check in after arrival.', 'Zhang buys takeaway food on an online platform and enjoys delicious food at home.']