Is Manxinying platform legit? How to do with the improper losses?

In this end of June,I received a phone call,on which one told me that there was free recommendation on skills.I took the chance to add him.I was pulled into a group,then flowed into a smaller group.The group administrator gave us a link.By typing phone number and the password provided,we entered a live-broadcasting room of teacher Yongjun Huang,who gave lessons during 19:30-21:30 everyday when the market.But there were only teacher Huang’s voice ,Power Point and records of investments in the live-broadcasting room,in which member could chat with teacher through chatting frames.
Teacher recommended profitable stock the day and asked shareholders to purchase and sell stock at pointed time interval directly,which I didn’t believe at first.After observing for days,I found the stock recommended was valuable,though the profit point was volatile,they earned money overall.I quickly became the super fan of the live-broadcasting room.With Huang’s recommendation,I opened an account in Manxinying and deposited 200000 RMB to follow his operation.On Monday,I made a loss of 50000 RMB and gained a little at night,small loss overall.On Tuesday,with teacher’s operation on large position,I made a loss of 150000 RMB overnight.I asked him what to do next,he said it doesn’t matter...