"Charles has been enlisted by the Silent Authority now and is doing a secret mission." At that time, Wolf Flute had pulled out a document with a vow. He placed it before Ye Qingxuan with a pen he had clearly prepared. "If you want to hear more, sign this and join us."
It finally dawned on Ye Qingxuan. "You just wanted to drag me in?"
Wolf Flute shrugged. "Even if I didn't, you'd try to join in, right? Instead of having you mess around, I'd rather get you in officially."
Ye Qingxuan scanned the paper and signed his name. When he printed his music theory, the contract's secret music theory seeped into his body as well, forming a contract.