What do you mean by sweet talk?

Legend has it that in ancient times there was a rich man who hired two servants to work. Servant A is not only diligent and kind, but also works hard to interact with the boss. Also sweet talk, look at the expression to relieve depression and worry for the boss. Good intentions, rhetoric, won the trust of the boss, from helper to accountant, in charge of finance, but also rewarded with money. The second servant did a good job, but as soon as he opened his mouth, he often said unlucky things, which made the boss unbearable and was quickly dismissed. As soon as the incident spread, there was a saying that "a good word can untie people's belts and a bad word can break people's hearts."