One of my favorite Chinese anime; you should skip old season 1. They have reanimated season 1 after season 2 or 3. It's short and more aligned with the story. Old season 1 is quite bad and lengthy, so start from reanimated season 1 and go for all seasons. It only gets better season after season story is great and only gets better with time. character developments good too. only drawdown will be naming in the whole anime is quite confusing or subbed weren't that good and this is usually problem with Chinese animes and if you're used to it you will have no issues