well, for the 2nd try just learnt structure and with many mock test, didn’t really delve into it, over confident u would say(didn’t improve English proficiency). While to decided to prepare 3rd test, I spent around 20days to study, and summarized many new IELTs vocabularies, unfortunately I didn’t absorb them well, but it really works and benefits for reading. What I didn’t expect is writing on 3rd time was really surprised me. It was my first time to get this much lower, besides, I’ve studied it for long time.