What is the present condition of hotline like today? What is the purpose of starting the hotline for teenagers?

M: Hotlines are very common in today’s life, do you think so?
W: Of course.
M: Most of them are about amusement, in my opinion. But some of them are very important in our daily life.
W: Is that true?
M: Certainly. A free hotline offering help to teenagers was opened in Guangdong.
W: Can you tell me something more about it?
M: It is the first part of the national hotline system to help to protect teens’ rights. Young people who have psychological problems or questions on legal issues can call for help. More than 100 experts are ready to offer help.
W: Then what is the telephone number?
M: Call 12355 if you are in Guangzhou and 020-12355 if you are outside.
W: Oh, it will be a help to teenagers.