I was selling my car and received a message from a buyer from Singapore. She brought me a lot of fun chatting with me. Later she gradually gained my trust and then started talking to me about investment. She told me that she currently has a very profitable AI project. Under her instigation, I chose to believe her. I purchased a total of 20,000 US dollars of DAI. Later, I wanted to get my friends to participate. My friend is Professional blockchain expert, he told me this is a scam!