1. Official channel: Pay attention to official website, social media or official ticketing platform of Guoan and Shanghai Club. They usually announce the time and channel of ticket sales in advance, and can purchase tickets through official channels.
2. Third-party ticketing platforms: Some third-party ticketing platforms may provide ticketing services after the tickets are sold. You can pay attention to the official website or application of these platforms, get ticket information and purchase tickets.
3. Reservation notification: Some official channels or third-party ticketing platforms provide reservation notification service, and you can register for subscription notification before invoicing. In this way, at the beginning of ticket sales, you will receive relevant notice, so as to buy tickets in time.