Kaizi Brother, named Zheng Kai, looks quite old, but is actually only twenty-eight this year. It's mainly the full beard that gives that impression.
Zheng Kai had been an orphan since childhood. At the age of eight, he nearly froze to death under a bridge in the deep winter. It was Senior Mrs. Zheng, bedridden with illness, who picked him up and took him home, fed him, clothed him, and then raised him through hardship. Later, Zheng Kai simply changed his surname to Zheng and treated Senior Mrs. Zheng as his own mother. When he returned home from the military, Senior Mrs. Zheng fell ill and never recovered. The household was so poor that there was no money for her treatment. Out of desperation, Zheng Kai followed a gang leader and became his "Hong Gun", which provided the money for the life-saving treatment, but this led him onto a different path.
