What does "talking about learning to sing" mean in the art of cross talk?

The so-called "talking about learning to sing" refers to the basic skills in cross talk performance. As crosstalk is a language art, it pays attention to the skills of language and sound, so these four basic skills are particularly important for actors. "Speaking" refers to telling jokes, reciting tongue twisters, making two-part allegorical sayings, etc. That is, the actors are required to speak clearly and fluently during the performance; "Learning" means being good at imitating all kinds of people, things and sound effects, including all kinds of ventriloquism, dialects, hawking, opera singing, voices and smiles of men, women and children, different characters and various customs and habits. "Teasing" means being good at joking, which means "shaking the burden". During the performance, the actors embraced each other in a funny tone, praised and criticized comments, and satirized and teased; "Singing" means that an actor is required to have a good voice, learn to sing all kinds of operas and popular tunes, sing funny words with all kinds of tunes when performing, or exaggerate some operas and tunes to achieve the effect of making people laugh. "Talking about learning to sing" is the basis of crosstalk performance, which requires crosstalk performers to have. But in the actual performance, different actors have their own strengths and styles according to their own characteristics.