Hello, I want to ask you a question.为什么用exchange.IO(api, GET, /api/v5/market/history-candles, instId=BTC-USDT&before=1639467042705&after=1639467642705); cannot find the data, but uses HttpQueryhttps://www.okex.com/api/v5/market/history-candles?instId=BTC-USDT&before=1639467042705&after=1639467642705(Laughter) But you can find the data.
The grassK-line data is a public interface, accessed with HttpQuery