first tech round: sql and python interviewer was very helpful to give some hints, but need to finish the questions and passed the test, I did 3 sql and 3 python, and the 3rd sql did not pass the test, and 3rd python did not finish. In the end, I did not pass first round.

Prepare technical concepts, and practice previously asked questions as much as you can find online. 4 rounds in the total process. It's easy as long as you just practice a LOT.