Profit 81.5% MACD EMA Strategy Backtest 250 times. How to backtest? Does your strategy works?

Profit 81.5% MACD EMA Strategy Backtest 250 times. How to backtest? Does your strategy works? This time I would like to share with you the use of the MACD EMA strategy to do a backtest of Euro against the US following are the basic situation of the test: The test time is from May 1, 2017, to June 21, 2018. Lasted 416 days, of which 298 were trading days. 251 transactions were made in a 30-minute time frame during the period. On average, there are 8 trading opportunities per week, The principal is 10,000 dollars, The profit-loss ratio is 1.5 to 1, and each loss is 1% of the principal. So the profit and loss are fixed amounts, You earn 150 dollars once you win and lose 100 dollars once you lose. The cost of forex trading is low, If you use it for stock trading, you may need to consider the cost of transactions. This is a trend trading strategy, the rules are quite simple. We use EMA 200 as filter to determine the trend, When the price is higher than