If you have to say that kung fu is the best, no one dares to say so. China's kungfu skills are different.
Also, I feel that you have entered a misunderstanding. It's not that you can live a long life by learning kung fu, but that you should focus on treatment. Secondly, you should cultivate good living habits and establish a correct outlook on life, because diseases are inextricably linked with people's psychological state, personality and temper.