I experienced the products of the Backpack exchange and it was terrible. The liquidity was very poor. Taking the Sui contract as an example, Sui is also a large currency, and the candlestick is intermittent. Then I switched to the BTC contract's rating chart, which is the same I thought it was understandable that the contract was still in the testing stage, but when I looked at the spot, the liquidity was even more confused, as if I had completely given up and gone bankrupt. I had no choice but to withdraw my funds, I was really afraid of running away