Flag selling is a vital source of donations for many non-profit organizations. However, for smaller entities, organizing such events is far from simple. It often requires the recruitment of hundreds of volunteers and the allocation of significant manpower and resources to coordinate various arrangements. Additionally, meeting the Social Welfare Department's 'net income target' adds pressure, with some organization heads admitting that nearly all their manpower is devoted to preparing for flag sales a month in advance, impacting other services and presenting a dilemma. In recent years, the introduction of electronic flag selling has emerged as a potential solution to enhance fundraising effectiveness.