This is because 99 Public Welfare Day is a public welfare activity initiated by China Internet company Alibaba, which has received extensive participation and support. As one of the largest e-commerce companies in China, Alibaba has a huge user base and influence, and can mobilize more people to participate in public welfare activities. 99 Public Welfare Day is not only a one-day public welfare activity, but also a long-term public welfare project and partner. Through online and offline forms, 99 Public Welfare Day can cover a wider range of regions and people, making public welfare activities more influential.