The kind couple had a daughter named Lan Huifang, and naturally, that made her Grandpa Chi's younger sister.
After raising the siblings for a few years, the couple was beaten to death by an enemy when they were out. Grandpa Chi then brought his sister, Lan Huifang, to join the military.
Grandpa Chi worked hard and eventually became a general. Lan Huifang also went from being an ordinary medic to a senior professor who possessed the military rank of major general.
After Lan Huifang married the leader of the Pei Family, she benefited a lot from Grandpa Chi to strengthen the Pei family. Later on, as she became more and more unscrupulous, she did many things with Grandpa Chi's name outside the house.
Since Lan Huifang was his younger sister, Grandpa Chi would only lecture her before silently cleaning up the mess.