He stared deeply at the fat man across from him, and Xin Yun laughed, a profound laugh. The fat man might look both fat and stupid and seemed quite slow-witted, a picture of honesty and simplicity, but in reality, this guy not only had a large frame but also a great deal of wisdom!
Don't think this guy is blindly arrogant and overbearing. In fact, it's all with purpose, to force Xin Yun to agree to gamble with him, and the gambling game is clearly about remaining "unscathed." As long as Xin Yun agreed to gamble, the fat man would certainly propose the condition of the fight to remain "unscathed." If Xin Yun were touched even slightly, even a scrape would mean he lost. At that time, even if Xin Yun had the ability to defeat him, it would be useless; he'd have to admit defeat.