It's in direct reference to Bai Qi, a decorated Chinese general from the Qin kingdom during the Warring States era. Originally I wanted Qi Jiguang (Wuyi), a general from the late Ming Dynasty who was well known for his successful campaigns against the Japanese, Korean, Chinese and Portuguese wokou that plagued Shandong's coastal region.
However, not finding a portrait of him, I settled instead on who you see now. A figure even more illustrious and historied then the one who I was initially looking for. Apparently Bai Qi served a military career as a commander for more than 30 years, and in that time seized more than 73 cities, having not lost even one battle. More notably, while fighting the Zhao kingdoms forces with the soldiers he commanded, he routed and killed between 890,000 to 2,000,000 of theirs.
For his extremely successful and brutal victories against the rival nation, he was nicknamed Ren Tu or, human butcher and was proclaimed by later Chinese historians as one the four greatest generals during the Warring States period.
Yeah, I know it seems pretty mucked up speaking about a potential mass murderer in such tones of reverence, but in my opinion, he's more a hero during a chaotic time who played his part in eventually unifying China, under his state respectively, even if he had to cut a bloody swathe through it.