First of all, we should choose the style of broadcasting according to the characteristics of our own voice, and then try to find out how to make this style. Listen to how big coffee is dubbed. Learning imitation is the first step. Exchange experiences with classmates. The most important thing is to practice more. It's no use just talking and not doing.
The most basic way to practice vocal music is reading aloud. Read some newspapers, abstracts and so on, the purpose is to speak Mandarin well. Practice the rhythm first. Flat tongue and upturned tongue. These seem to have been taught in Chinese classes, and the most basic Chinese knowledge is followed by vocal music practice. Think of sound as a sounding tool. Be sure to relax, so that the sound will not be very tight and make people feel uncomfortable.
Only when you relax, will you have that kind of magnetic voice, sexy voice.