"What you're saying isn't necessarily impossible. But failing at Core Formation isn't the same as failing at Foundation Establishment. Many people might only get one shot in their lifetime. You're highly talented. If you get held up at this step and don't fully realize your potential, it'd be a great loss for the Immortal Sect and the Daoist Academy. So think it over carefully."
Chai Lun was mature and prudent. He cared a lot about his junior Chen Mobai and was afraid that Chen's qualifications for Deification would meet an untimely end. Hence, he felt compelled to offer a word of advice.
"The one chance you're talking about is because, in the Immortal Sect system, most people can only trade for one Gold Core Spiritual Material."
"If I try to form my core without using the Gold Core Spiritual Material first, even if I fail, not only would I have gained experience, it wouldn't affect my exchange for the Gold Core Spiritual Material."