Is CHINA FORTUNE FUTURES safe?

I was invited into a group chat without notification on May 25, 2020. I was told the group chat was for us to share investment knowledge without charge. There was a teacher who said he worked in Hong Kong before in this group chat, now he retired and wanted to help us. Then he taught us the investment technology in this group chat. Because I lost much in the stock market, I cared about the group messages. After few days, I began trusting him and usually asked him for advice. On June 8, the teacher said if we wanna make our money back, we could invest with him in CHINA FORTUNE FUTURES. We could profit more! Later, he shared the profitable trade of his students in the group chat. I was attracted by the profit and joined CHINA FORTUNE FUTURES. I listened his lessons in his live streaming for several days. After that, I opened an account with the help of an assistant. Once the teacher gave a recommendation, saying we can buy sell orders without stop loss and limit. I trusted him so I did as what he said. After thirty minutes, I found I lost over ￥10,000. I didn’t know what to do. Another thirty minutes passed, I can’t help closing these positions, making a loss of ￥20,000. He asked us whether we had sell orders. So I deposited and bought again reluctantly. However, the live streaming suspended and dismissed. A new one was created. I followed the teacher’s instructions in the next few days, but I still lost and the amount was huge. I made a lose of over ￥300,000 in total. What’s worse, the teacher is out of contact.