1. The caller is busy and can't answer the phone. When making a hotline call, if the other party doesn't answer the phone, it may be because the other party is busy and can't answer the phone, or it may be because the other party is resting or sleeping and can't answer the phone.
2. The hotline may have been changed or shut down, which makes it impossible to connect. The hotline may sometimes be changed or stopped for various reasons. If you call the old hotline, this may happen because you can't get through.
3. The hotline service time has expired or is not within the service scope. The service hours of the hotline are usually limited, and if the dialed time is not within the service range, it may lead to the failure to connect.
The hotline may be overloaded or broken, which makes it impossible to connect. During peak hours, the hotline may be overloaded or interrupted. If you call at this time, this may happen because you can't get through.
No matter what causes the Tsinghua psychological counseling hotline to be disconnected, I suggest you try calling again or contacting the Tsinghua University psychological counseling center in other ways to get more information and help. At the same time, you can also seek other ways for psychological counseling, such as online counseling or seeking local psychological counseling institutions.