The "Senior Brother Yun Feng" mentioned by Baili Mingyue is none other than Yun Yi's son.
Yun Yi has two sons and a daughter. His eldest son, Yun Hun, is a powerful Thunder Tribulation Realm Level Two expert and currently serves as a steward on Black Tortoise Island.
The second daughter, Yun Yan, reached the Thunder Tribulation Realm Level One and then went traveling, having not returned for many years, with her whereabouts currently unknown.
The third son, Yun Feng, has lingered at the Half-Step Thunder Tribulation Realm for many years and is currently an ordinary disciple on Black Tortoise Island.
Yun Yi has put in considerable effort for his youngest son's cultivation advancement, but despite Yun Yi's tireless instruction and the use of abundant cultivation resources, Yun Feng has been unable to break through the Thunder Tribulation Realm.
