What were the specific arguments or opposing views that Hemadpant used to engage in before following Sai's advice?

The provided chapters do not specify the exact topics or arguments Hemadpant engaged in. While Chapter 2 describes him as being cynical, critical, and prone to argumentation, it does so in general terms to illustrate his character. The text quotes Sai's advice: "Do not establish your own side, do not refute the other side, Do not engage in dualistic explanations." This counsel is presented as a general spiritual principle against the kind of intellectual pride and "false logic" that characterized Hemadpant's earlier mindset. There are no concrete examples of debates he participated in, only a description of his argumentative nature.