Old Ji is a seasoned schemer, but who is Aowu Sister? Leaving aside her identity as one of the Tage people, she is the younger sister raised by Medusa, who is now the beloved daughter of the Tiger Demon Queen.
By taking Aowu Sister as his adopted granddaughter, he would firmly establish a family connection.
Coupled with his personal relationship with Li Lanhao, wouldn't he naturally end up clinging to the Queen's powerful influence after taking such a roundabout way?
Chapter 781