It does not necessarily mean that the other party has just come online, it may also be that the other party has been online for a while but you have not interacted with them. Because Douyin's greeting reminder is based on certain trigger conditions, such as the other party also greets you or watches your video, etc. When these conditions are met, the system will automatically send a prompt to remind you to say hello. Therefore, this reminder does not accurately indicate that the other party has just come online. In addition, even if the other party has just come online, they may not receive your greeting reminder. Because Douyin's message push mechanism is based on an algorithm, it may filter the message push to a certain extent. Therefore, if you want to ensure that you can interact with the other party in a timely manner, you need to contact them through other means.