The bear / bull trading pair is essentially a fraudulent trading pair, making you energetic and will lose up to 90% of assets like the bull trading pair on Binance. Due to this imbalance, many users complained and Binance had to cancel this pair on their exchange. This will be a great lesson for you in the following investments: be sure to understand carefully what you plan to invest and remember to always put stoploss for your investment decisions. If you lose 10% of your assets after an investment, you can still make a profit. If you lose 40-80% of your assets by not putting a stoploss, it's very difficult for you to regain your original capital.