I Became a Mercenary

My name is Zhang Shan, and I'm a university student. Since “Sanhe Mountain” sounds a lot like “Zhang San,” my friends all call me Zhang San. Some call me Li Si, too. Either way, if someone calls out Zhang San or Li Si, they must mean me. I trained in kung fu with my father from a young age, so I'm in far better shape than most, standing 180 centimeters tall with rock-solid muscle. I attend university in a border city. One day, I went to a shopping mall to eat with my roommates and ran into a robbery. From then on, my fate changed.