The HSK had already reholstered its pistol by the time the corpse of the Chinese Proficiency Test hit the ground. When the sheriff showed up later, his investigation would be cursory. And the few witnesses who had seen the shootout through shuttered windows would stay quiet. In this town, the HSK test was king.
Note: the fourth level on the New HSK test corresponds to the first level of the older HSK exam in terms of its difficulty. What this means is that you should be able to tackle this material after one or two years of study. So give it a try and see how you do. And if you can routinely get over 12 answers correct? Promote yourself to level five.