Discuss the content of the eight-character mantra

It seems that he didn't have any purpose, because he didn't know that you knew the seller would also give you benefits, so he sold you a pass when chatting on WeChat, thinking that you would be surprised that the money was more than expected. As a result, you knew it as soon as you asked, so he asked you why you knew that the seller would also give money, because the effect he wanted to surprise you was not achieved, so he asked you, and it was nothing.