K-line Jianghu Academy: How to judge whether you can trade full-time?

If you want to make money in trading, what principles do you need to understand?

How to judge the trend in the early stage. ?

How to systematically learn foreign exchange trading?

How to understand the phrase "the simpler the trading system, the better"?

What is the degree of simplicity here? Or the simplicity here is not what I thought, just use a few indicators, so what do you think of this sentence?

I have been unable to set the stop loss in the transaction, how can I do a good stop loss?