Guangchengzi's observation lasted for a mere decade or so.
During these ten-odd years, he grew increasingly satisfied with Ji Xuanyuan, who understood propriety, knew when to advance and retreat, came from a prestigious background in the Youxiong Kingdom, and possessed the bearing of a great sage.
Finally,
having made up his mind, Guangchengzi chose to end his covert observation and appeared openly.
He directly revealed his identity as a disciple of a Sage's Daoist Tradition and the senior disciple of Chan Teaching.
Then,
amidst the ecstatic joy of the Lord of Youxiong Kingdom and the respectful attitude of Ji Xuanyuan, Guangchengzi took the young Ji Xuanyuan as his disciple.
Chapter 320