Crowdfunding, that is, crowdfunding or crowdfunding, refers to the mode of "" "to raise project funds from netizens. It consists of promoters, investors, and platforms. It uses the characteristics of Internet communication to allow small businesses, artists, or individuals. To show their creativity to the public, to win everyone's attention and support, and then to obtain the financial assistance needed. It has a low threshold, diversity, relying on public power, and focusing on creativity. According to the above definition, Which of the following behaviors are crowdfunding:. ['Watermelons are abundant in a certain area. Xiao Zhao posted a message on the Internet to organize pre-orders. Many netizens participated in "group purchases. " Guarana farmers planted according to the reservation information. They can quickly sell out watermelons every year.', "Xiao Li hopes to build an activity area for daily activities for the elderly in the community. He initiated fund-raising activities on the community's website and quickly received responses from the residents of the community to raise the required funds.", 'Xiaoxin designed a pet feeder, and netizens saw photos of him "baked" and asked for purchases. Xiaoxin accepted a batch of netizens\' reservations and mass-produced them at the cost of the reservation.', 'Xiao Tang designed an automatic egg picker for a chicken farm. For mass production, he introduced his project online. After an investment company saw it, he provided Xiao Tang with all the costs needed for production.']