If it were said that the Jiang's branch family changed their name and surname in order to become Jiang Zhuyun's support and retrieve the Ochre Whip, then as the master of the main family, Jiang Zhuyun was simply doing it to avoid disaster.
His identity was known to the upper echelons of the Sect, yet he still had to take on someone else's identity and even completely change his appearance, which shows that the main family is deep in trouble. Once his identity is revealed, it may attract other calamities.
And it's also very embarrassing.
Jiang Zhuyun had become Ji Yunliu. His face wasn't his own, his name wasn't his own, and once he was unmasked, both the Jiang family's integrity and Jiang Zhuyun's own face would be equivalent to being stripped away and trampled on the ground. It would be a total loss of face.
But at this point, Jiang Zhuyun was already pushed to the edge of a cliff. He had to choose between losing face or still losing face.
